Difference between revisions of "1953 AHSME Problems"
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\textbf{(B)}\ 150 \text{ oranges} \qquad | \textbf{(B)}\ 150 \text{ oranges} \qquad | ||
\textbf{(C)}\ 200\text{ oranges}\ | \textbf{(C)}\ 200\text{ oranges}\ | ||
− | textbf{(D)}\ \text{an infinite number of oranges}\qquad | + | \textbf{(D)}\ \text{an infinite number of oranges}\qquad |
\textbf{(E)}\ \text{none of these} </math> | \textbf{(E)}\ \text{none of these} </math> | ||
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==Problem 2== | ==Problem 2== | ||
− | A refrigerator is offered at sale at $ 250.00 less successive discounts of | + | A refrigerator is offered at sale at $ 250.00 less successive discounts of 20% and 15%. The sale price of the refrigerator is: |
− | < | + | <math>\text{(A) 35\% less than 250.00} \qquad |
− | \ | + | \text{(B) 65\% of 250.00} \qquad |
− | \ | + | \text{(C) 77\% of 250.00} \qquad \ |
− | \ | + | \text{(D) 68\% of 250.00} \qquad |
− | \ | + | \text{(E) none of these} </math> |
[[1953 AHSME Problems/Problem 2|Solution]] | [[1953 AHSME Problems/Problem 2|Solution]] | ||
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==Problem 3== | ==Problem 3== | ||
− | The factors of the expression < | + | The factors of the expression <math>x^2+y^2</math> are: |
− | < | + | <math>\textbf{(A)}\ (x+y)(x-y) \qquad |
\textbf{(B)}\ (x+y)^2 \qquad | \textbf{(B)}\ (x+y)^2 \qquad | ||
− | \textbf{(C)}\ (x^{\frac{2}{3}}+y^{\frac{2}{3}})(x^{\frac{4}{3}}+y^{\frac{4}{3}})\ \textbf{(D)}\ (x+iy)(x-iy)\qquad | + | \textbf{(C)}\ (x^{\frac{2}{3}}+y^{\frac{2}{3}})(x^{\frac{4}{3}}+y^{\frac{4}{3}})\ |
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ (x+iy)(x-iy)\qquad |
+ | \textbf{(E)}\ \text{none of these} </math> | ||
− | + | [[1953 AHSME Problems/Problem 3|Solution]] | |
==Problem 4== | ==Problem 4== | ||
− | The roots of < | + | The roots of <math>x(x^2+8x+16)(4-x)=0</math> are: |
− | < | + | <math>\textbf{(A)}\ 0 \qquad |
\textbf{(B)}\ 0,4 \qquad | \textbf{(B)}\ 0,4 \qquad | ||
\textbf{(C)}\ 0,4,-4 \qquad | \textbf{(C)}\ 0,4,-4 \qquad | ||
\textbf{(D)}\ 0,4,-4,-4 \qquad | \textbf{(D)}\ 0,4,-4,-4 \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 4|Solution]] | [[1953 AHSME Problems/Problem 4|Solution]] | ||
+ | |||
==Problem 5== | ==Problem 5== | ||
− | If < | + | If <math>\log_6 x=2.5</math>, the value of <math>x</math> is: |
− | < | + | <math>\textbf{(A)}\ 90 \qquad |
\textbf{(B)}\ 36 \qquad | \textbf{(B)}\ 36 \qquad | ||
\textbf{(C)}\ 36\sqrt{6} \qquad | \textbf{(C)}\ 36\sqrt{6} \qquad | ||
\textbf{(D)}\ 0.5 \qquad | \textbf{(D)}\ 0.5 \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 5|Solution]] | [[1953 AHSME Problems/Problem 5|Solution]] | ||
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==Problem 6== | ==Problem 6== | ||
− | Charles has < | + | Charles has <math>5q + 1</math> quarters and Richard has <math>q + 5</math> quarters. The difference in their money in dimes is: |
− | < | + | <math>\textbf{(A)}\ 10(q - 1) \qquad |
\textbf{(B)}\ \frac {2}{5}(4q - 4) \qquad | \textbf{(B)}\ \frac {2}{5}(4q - 4) \qquad | ||
\textbf{(C)}\ \frac {2}{5}(q - 1) \ | \textbf{(C)}\ \frac {2}{5}(q - 1) \ | ||
\textbf{(D)}\ \frac{5}{2}(q-1)\qquad | \textbf{(D)}\ \frac{5}{2}(q-1)\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 6|Solution]] | [[1953 AHSME Problems/Problem 6|Solution]] | ||
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==Problem 7== | ==Problem 7== | ||
− | The fraction < | + | The fraction <math>\frac{\sqrt{a^2+x^2}-(x^2-a^2)/\sqrt{a^2+x^2}}{a^2+x^2}</math> reduces to: |
− | < | + | <math>\textbf{(A)}\ 0 \qquad |
\textbf{(B)}\ \frac{2a^2}{a^2+x^2} \qquad | \textbf{(B)}\ \frac{2a^2}{a^2+x^2} \qquad | ||
\textbf{(C)}\ \frac{2x^2}{(a^2+x^2)^{\frac{3}{2}}}\qquad | \textbf{(C)}\ \frac{2x^2}{(a^2+x^2)^{\frac{3}{2}}}\qquad | ||
\textbf{(D)}\ \frac{2a^2}{(a^2+x^2)^{\frac{3}{2}}}\qquad | \textbf{(D)}\ \frac{2a^2}{(a^2+x^2)^{\frac{3}{2}}}\qquad | ||
− | \textbf{(E)}\ \frac{2x^2}{a^2+x^2} <math> | + | \textbf{(E)}\ \frac{2x^2}{a^2+x^2} </math> |
[[1953 AHSME Problems/Problem 7|Solution]] | [[1953 AHSME Problems/Problem 7|Solution]] | ||
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==Problem 8== | ==Problem 8== | ||
− | The value of < | + | The value of <math>x</math> at the intersection of <math>y=\frac{8}{x^2+4}</math> and <math>x+y=2</math> is: |
− | < | + | <math>\textbf{(A)}\ -2+\sqrt{5} \qquad |
\textbf{(B)}\ -2-\sqrt{5} \qquad | \textbf{(B)}\ -2-\sqrt{5} \qquad | ||
\textbf{(C)}\ 0 \qquad | \textbf{(C)}\ 0 \qquad | ||
\textbf{(D)}\ 2 \qquad | \textbf{(D)}\ 2 \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 8|Solution]] | [[1953 AHSME Problems/Problem 8|Solution]] | ||
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==Problem 9== | ==Problem 9== | ||
− | The number of ounces of water needed to reduce < | + | The number of ounces of water needed to reduce <math>9</math> ounces of shaving lotion containing <math>50</math> \% alcohol to a lotion containing <math>30</math> \% alcohol is: |
− | < | + | <math>\textbf{(A)}\ 3 \qquad |
\textbf{(B)}\ 4 \qquad | \textbf{(B)}\ 4 \qquad | ||
\textbf{(C)}\ 5 \qquad | \textbf{(C)}\ 5 \qquad | ||
\textbf{(D)}\ 6 \qquad | \textbf{(D)}\ 6 \qquad | ||
− | \textbf{(E)}\ 7 <math> | + | \textbf{(E)}\ 7 </math> |
[[1953 AHSME Problems/Problem 9|Solution]] | [[1953 AHSME Problems/Problem 9|Solution]] | ||
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==Problem 10== | ==Problem 10== | ||
− | The number of revolutions of a wheel, with fixed center and with an outside diameter of < | + | The number of revolutions of a wheel, with fixed center and with an outside diameter of <math>6</math> feet, required to cause a point on the rim to go one mile is: |
− | < | + | <math>\textbf{(A)}\ 880 \qquad |
\textbf{(B)}\ \frac{440}{\pi} \qquad | \textbf{(B)}\ \frac{440}{\pi} \qquad | ||
\textbf{(C)}\ \frac{880}{\pi} \qquad | \textbf{(C)}\ \frac{880}{\pi} \qquad | ||
\textbf{(D)}\ 440\pi\qquad | \textbf{(D)}\ 440\pi\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 10|Solution]] | [[1953 AHSME Problems/Problem 10|Solution]] | ||
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==Problem 11== | ==Problem 11== | ||
− | A running track is the ring formed by two concentric circles. It is < | + | A running track is the ring formed by two concentric circles. It is <math>10</math> feet wide. The circumference of the two circles differ by about: |
− | < | + | <math>\textbf{(A)}\ 10\text{ feet} \qquad |
\textbf{(B)}\ 30\text{ feet} \qquad | \textbf{(B)}\ 30\text{ feet} \qquad | ||
\textbf{(C)}\ 60\text{ feet} \qquad | \textbf{(C)}\ 60\text{ feet} \qquad | ||
− | \textbf{(D)}\ 100\text{ feet}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 100\text{ feet}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 11|Solution]] | [[1953 AHSME Problems/Problem 11|Solution]] | ||
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==Problem 12== | ==Problem 12== | ||
− | The diameters of two circles are < | + | The diameters of two circles are <math>8</math> inches and <math>12</math> inches respectively. The ratio of the area of the smaller to the area of the larger circle is: |
− | < | + | <math>\textbf{(A)}\ \frac{2}{3} \qquad |
\textbf{(B)}\ \frac{4}{9} \qquad | \textbf{(B)}\ \frac{4}{9} \qquad | ||
\textbf{(C)}\ \frac{9}{4} \qquad | \textbf{(C)}\ \frac{9}{4} \qquad | ||
\textbf{(D)}\ \frac{1}{2}\qquad | \textbf{(D)}\ \frac{1}{2}\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 12|Solution]] | [[1953 AHSME Problems/Problem 12|Solution]] | ||
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A triangle and a trapezoid are equal in area. They also have the same altitude. If the base of the triangle is 18 inches, the median of the trapezoid is: | A triangle and a trapezoid are equal in area. They also have the same altitude. If the base of the triangle is 18 inches, the median of the trapezoid is: | ||
− | < | + | <math>\textbf{(A)}\ 36\text{ inches} \qquad |
\textbf{(B)}\ 9\text{ inches} \qquad | \textbf{(B)}\ 9\text{ inches} \qquad | ||
\textbf{(C)}\ 18\text{ inches}\ | \textbf{(C)}\ 18\text{ inches}\ | ||
\textbf{(D)}\ \text{not obtainable from these data}\qquad | \textbf{(D)}\ \text{not obtainable from these data}\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 13|Solution]] | [[1953 AHSME Problems/Problem 13|Solution]] | ||
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==Problem 14== | ==Problem 14== | ||
− | Given the larger of two circles with center < | + | Given the larger of two circles with center <math>P</math> and radius <math>p</math> and the smaller with center <math>Q</math> and radius <math>q</math>. Draw <math>PQ</math>. Which of the following statements is false? |
− | < | + | <math>\textbf{(A)}\ p-q\text{ can be equal to }\overline{PQ}\ |
\textbf{(B)}\ p+q\text{ can be equal to }\overline{PQ}\ | \textbf{(B)}\ p+q\text{ can be equal to }\overline{PQ}\ | ||
\textbf{(C)}\ p+q\text{ can be less than }\overline{PQ}\ | \textbf{(C)}\ p+q\text{ can be less than }\overline{PQ}\ | ||
− | \textbf{(D)}\ p-q\text{ can be less than }\overline{PQ}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ p-q\text{ can be less than }\overline{PQ}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 14|Solution]] | [[1953 AHSME Problems/Problem 14|Solution]] | ||
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A circular piece of metal of maximum size is cut out of a square piece and then a square piece of maximum size is cut out of the circular piece. The total amount of metal wasted is: | A circular piece of metal of maximum size is cut out of a square piece and then a square piece of maximum size is cut out of the circular piece. The total amount of metal wasted is: | ||
− | < | + | <math>\textbf{(A)}\ \frac{1}{4} \text{ the area of the original square}\ |
− | \textbf{(B)}\ \frac{1}{2}\text{ the area of the original square}\ \textbf{(C)}\ \frac{1}{2}\text{ the area of the circular piece}\ \textbf{(D)}\ \frac{1}{4}\text{ the area of the circular piece}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(B)}\ \frac{1}{2}\text{ the area of the original square}\ \textbf{(C)}\ \frac{1}{2}\text{ the area of the circular piece}\ \textbf{(D)}\ \frac{1}{4}\text{ the area of the circular piece}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 15|Solution]] | [[1953 AHSME Problems/Problem 15|Solution]] | ||
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==Problem 16== | ==Problem 16== | ||
− | Adams plans a profit of < | + | Adams plans a profit of <math>10</math> \% on the selling price of an article and his expenses are <math>15</math> \% of sales. The rate of markup on an article that sells for $ <math>5.00</math> is: |
− | < | + | <math>\textbf{(A)}\ 20\% \qquad |
\textbf{(B)}\ 25\% \qquad | \textbf{(B)}\ 25\% \qquad | ||
\textbf{(C)}\ 30\% \qquad | \textbf{(C)}\ 30\% \qquad | ||
\textbf{(D)}\ 33\frac {1}{3}\% \qquad | \textbf{(D)}\ 33\frac {1}{3}\% \qquad | ||
− | \textbf{(E)}\ 35\% <math> | + | \textbf{(E)}\ 35\% </math> |
[[1953 AHSME Problems/Problem 16|Solution]] | [[1953 AHSME Problems/Problem 16|Solution]] | ||
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==Problem 17== | ==Problem 17== | ||
− | A man has part of $ < | + | A man has part of $ <math>4500</math> invested at <math>4</math> \% and the rest at <math>6</math> \%. If his annual return on each investment is the same, the average rate of interest which he realizes of the $4500 is: |
− | < | + | <math>\textbf{(A)}\ 5\% \qquad |
\textbf{(B)}\ 4.8\% \qquad | \textbf{(B)}\ 4.8\% \qquad | ||
\textbf{(C)}\ 5.2\% \qquad | \textbf{(C)}\ 5.2\% \qquad | ||
\textbf{(D)}\ 4.6\% \qquad | \textbf{(D)}\ 4.6\% \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 17|Solution]] | [[1953 AHSME Problems/Problem 17|Solution]] | ||
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==Problem 18== | ==Problem 18== | ||
− | One of the factors of < | + | One of the factors of <math>x^4+4</math> is: |
− | < | + | <math>\textbf{(A)}\ x^2+2 \qquad |
\textbf{(B)}\ x+1 \qquad | \textbf{(B)}\ x+1 \qquad | ||
\textbf{(C)}\ x^2-2x+2 \qquad | \textbf{(C)}\ x^2-2x+2 \qquad | ||
\textbf{(D)}\ x^2-4\ | \textbf{(D)}\ x^2-4\ | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 18|Solution]] | [[1953 AHSME Problems/Problem 18|Solution]] | ||
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==Problem 19== | ==Problem 19== | ||
− | In the expression < | + | In the expression <math>xy^2</math>, the values of <math>x</math> and <math>y</math> are each decreased <math>25</math> \%; the value of the expression is: |
− | < | + | <math>\textbf{(A)}\ \text{decreased } 50\% \qquad |
\textbf{(B)}\ \text{decreased }75\%\ | \textbf{(B)}\ \text{decreased }75\%\ | ||
\textbf{(C)}\ \text{decreased }\frac{37}{64}\text{ of its value}\qquad | \textbf{(C)}\ \text{decreased }\frac{37}{64}\text{ of its value}\qquad | ||
− | \textbf{(D)}\ \text{decreased }\frac{27}{64}\text{ of its value}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ \text{decreased }\frac{27}{64}\text{ of its value}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 19|Solution]] | [[1953 AHSME Problems/Problem 19|Solution]] | ||
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==Problem 20== | ==Problem 20== | ||
− | If < | + | If <math>y=x+\frac{1}{x}</math>, then <math>x^4+x^3-4x^2+x+1=0</math> becomes: |
− | < | + | <math>\textbf{(A)}\ x^2(y^2+y-2)=0 \qquad |
\textbf{(B)}\ x^2(y^2+y-3)=0\ | \textbf{(B)}\ x^2(y^2+y-3)=0\ | ||
\textbf{(C)}\ x^2(y^2+y-4)=0 \qquad | \textbf{(C)}\ x^2(y^2+y-4)=0 \qquad | ||
− | \textbf{(D)}\ x^2(y^2+y-6)=0\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ x^2(y^2+y-6)=0\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 20|Solution]] | [[1953 AHSME Problems/Problem 20|Solution]] | ||
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==Problem 21== | ==Problem 21== | ||
− | If < | + | If <math>\log_{10} (x^2-3x+6)=1</math>, the value of <math>x</math> is: |
− | < | + | <math>\textbf{(A)}\ 10\text{ or }2 \qquad |
\textbf{(B)}\ 4\text{ or }-2 \qquad | \textbf{(B)}\ 4\text{ or }-2 \qquad | ||
\textbf{(C)}\ 3\text{ or }-1 \qquad | \textbf{(C)}\ 3\text{ or }-1 \qquad | ||
− | \textbf{(D)}\ 4\text{ or }-1\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 4\text{ or }-1\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 21|Solution]] | [[1953 AHSME Problems/Problem 21|Solution]] | ||
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==Problem 22== | ==Problem 22== | ||
− | The logarithm of < | + | The logarithm of <math>27\sqrt[4]{9}\sqrt[3]{9}</math> to the base <math>3</math> is: |
− | < | + | <math>\textbf{(A)}\ 8\frac{1}{2} \qquad |
\textbf{(B)}\ 4\frac{1}{6} \qquad | \textbf{(B)}\ 4\frac{1}{6} \qquad | ||
\textbf{(C)}\ 5 \qquad | \textbf{(C)}\ 5 \qquad | ||
\textbf{(D)}\ 3 \qquad | \textbf{(D)}\ 3 \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 22|Solution]] | [[1953 AHSME Problems/Problem 22|Solution]] | ||
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==Problem 23== | ==Problem 23== | ||
− | The equation < | + | The equation <math>\sqrt {x + 10} - \frac {6}{\sqrt {x + 10}} = 5</math> has: |
− | < | + | <math>\textbf{(A)}\ \text{an extraneous root between } - 5\text{ and } - 1 \ |
\textbf{(B)}\ \text{an extraneous root between }-10\text{ and }-6\ \textbf{(C)}\ \text{a true root between }20\text{ and }25\qquad | \textbf{(B)}\ \text{an extraneous root between }-10\text{ and }-6\ \textbf{(C)}\ \text{a true root between }20\text{ and }25\qquad | ||
− | \textbf{(D)}\ \text{two true roots}\ \textbf{(E)}\ \text{two extraneous roots} <math> | + | \textbf{(D)}\ \text{two true roots}\ \textbf{(E)}\ \text{two extraneous roots} </math> |
[[1953 AHSME Problems/Problem 23|Solution]] | [[1953 AHSME Problems/Problem 23|Solution]] | ||
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==Problem 24== | ==Problem 24== | ||
− | If < | + | If <math>a,b,c</math> are positive integers less than <math>10</math>, then <math>(10a + b)(10a + c) = 100a(a + 1) + bc</math> if: |
− | < | + | <math>\textbf{(A)}\ b + c = 10 \qquad |
\textbf{(B)}\ b = c \qquad | \textbf{(B)}\ b = c \qquad | ||
\textbf{(C)}\ a + b = 10 \qquad | \textbf{(C)}\ a + b = 10 \qquad | ||
\textbf{(D)}\ a = b \ | \textbf{(D)}\ a = b \ | ||
− | \textbf{(E)}\ a+b+c = 10 <math> | + | \textbf{(E)}\ a+b+c = 10 </math> |
[[1953 AHSME Problems/Problem 24|Solution]] | [[1953 AHSME Problems/Problem 24|Solution]] | ||
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In a geometric progression whose terms are positive, any term is equal to the sum of the next two following terms. then the common ratio is: | In a geometric progression whose terms are positive, any term is equal to the sum of the next two following terms. then the common ratio is: | ||
− | < | + | <math>\textbf{(A)}\ 1 \qquad |
\textbf{(B)}\ \text{about }\frac{\sqrt{5}}{2} \qquad | \textbf{(B)}\ \text{about }\frac{\sqrt{5}}{2} \qquad | ||
\textbf{(C)}\ \frac{\sqrt{5}-1}{2}\qquad | \textbf{(C)}\ \frac{\sqrt{5}-1}{2}\qquad | ||
\textbf{(D)}\ \frac{1-\sqrt{5}}{2}\qquad | \textbf{(D)}\ \frac{1-\sqrt{5}}{2}\qquad | ||
− | \textbf{(E)}\ \frac{2}{\sqrt{5}} <math> | + | \textbf{(E)}\ \frac{2}{\sqrt{5}} </math> |
[[1953 AHSME Problems/Problem 25|Solution]] | [[1953 AHSME Problems/Problem 25|Solution]] | ||
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==Problem 26== | ==Problem 26== | ||
− | The base of a triangle is < | + | The base of a triangle is <math>15</math> inches. Two lines are drawn parallel to the base, terminating in the other two sides, and dividing the triangle into three equal areas. The length of the parallel closer to the base is: |
− | < | + | <math>\textbf{(A)}\ 5\sqrt{6}\text{ inches} \qquad |
\textbf{(B)}\ 10\text{ inches} \qquad | \textbf{(B)}\ 10\text{ inches} \qquad | ||
\textbf{(C)}\ 4\sqrt{3}\text{ inches}\qquad | \textbf{(C)}\ 4\sqrt{3}\text{ inches}\qquad | ||
− | \textbf{(D)}\ 7.5\text{ inches}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 7.5\text{ inches}\ |
+ | \textbf{(E)}\ \text{none of these} </math> | ||
[[1953 AHSME Problems/Problem 26|Solution]] | [[1953 AHSME Problems/Problem 26|Solution]] | ||
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==Problem 27== | ==Problem 27== | ||
− | The radius of the first circle is < | + | The radius of the first circle is <math>1</math> inch, that of the second <math>\frac{1}{2}</math> inch, that of the third <math>\frac{1}{4}</math> inch and so on indefinitely. |
The sum of the areas of the circles is: | The sum of the areas of the circles is: | ||
− | < | + | <math>\textbf{(A)}\ \frac{3\pi}{4} \qquad |
\textbf{(B)}\ 1.3\pi \qquad | \textbf{(B)}\ 1.3\pi \qquad | ||
\textbf{(C)}\ 2\pi \qquad | \textbf{(C)}\ 2\pi \qquad | ||
\textbf{(D)}\ \frac{4\pi}{3}\qquad | \textbf{(D)}\ \frac{4\pi}{3}\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 27|Solution]] | [[1953 AHSME Problems/Problem 27|Solution]] | ||
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==Problem 28== | ==Problem 28== | ||
− | In < | + | In <math>\triangle ABC</math>, sides <math>a,b</math> and <math>c</math> are opposite <math>\angle{A},\angle{B}</math> and <math>\angle{C}</math> respectively. <math>AD</math> bisects <math>\angle{A}</math> and meets <math>BC</math> at <math>D</math>. |
− | Then if < | + | Then if <math>x = \overline{CD}</math> and <math>y = \overline{BD}</math> the correct proportion is: |
− | < | + | <math>\textbf{(A)}\ \frac {x}{a} = \frac {a}{b + c} \qquad |
\textbf{(B)}\ \frac {x}{b} = \frac {a}{a + c} \qquad | \textbf{(B)}\ \frac {x}{b} = \frac {a}{a + c} \qquad | ||
\textbf{(C)}\ \frac{y}{c}=\frac{c}{b+c}\ \textbf{(D)}\ \frac{y}{c}=\frac{a}{b+c}\qquad | \textbf{(C)}\ \frac{y}{c}=\frac{c}{b+c}\ \textbf{(D)}\ \frac{y}{c}=\frac{a}{b+c}\qquad | ||
− | \textbf{(E)}\ \frac{x}{y}=\frac{c}{b <math> | + | \textbf{(E)}\ \frac{x}{y}=\frac{c}{b} </math> |
[[1953 AHSME Problems/Problem 28|Solution]] | [[1953 AHSME Problems/Problem 28|Solution]] | ||
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==Problem 29== | ==Problem 29== | ||
− | The number of significant digits in the measurement of the side of a square whose computed area is < | + | The number of significant digits in the measurement of the side of a square whose computed area is <math>1.1025</math> square inches to |
the nearest ten-thousandth of a square inch is: | the nearest ten-thousandth of a square inch is: | ||
− | < | + | <math>\textbf{(A)}\ 2 \qquad |
\textbf{(B)}\ 3 \qquad | \textbf{(B)}\ 3 \qquad | ||
\textbf{(C)}\ 4 \qquad | \textbf{(C)}\ 4 \qquad | ||
\textbf{(D)}\ 5 \qquad | \textbf{(D)}\ 5 \qquad | ||
− | \textbf{(E)}\ 1 <math> | + | \textbf{(E)}\ 1 </math> |
[[1953 AHSME Problems/Problem 29|Solution]] | [[1953 AHSME Problems/Problem 29|Solution]] | ||
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==Problem 30== | ==Problem 30== | ||
− | A house worth $ < | + | A house worth $ <math>9000</math> is sold by Mr. A to Mr. B at a <math>10</math> \% loss. Mr. B sells the house back to Mr. A at a <math>10</math> \% gain. |
The result of the two transactions is: | The result of the two transactions is: | ||
− | < | + | <math>\textbf{(A)}\ \text{Mr. A breaks even} \qquad |
\textbf{(B)}\ \text{Mr. B gains }$900 \qquad | \textbf{(B)}\ \text{Mr. B gains }$900 \qquad | ||
\textbf{(C)}\ \text{Mr. A loses }$900\ \textbf{(D)}\ \text{Mr. A loses }$810\qquad | \textbf{(C)}\ \text{Mr. A loses }$900\ \textbf{(D)}\ \text{Mr. A loses }$810\qquad | ||
− | \textbf{(E)}\ \text{Mr. B gains }$1710 <math> | + | \textbf{(E)}\ \text{Mr. B gains }$1710 </math> |
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==Problem 31== | ==Problem 31== | ||
− | The rails on a railroad are < | + | The rails on a railroad are <math>30</math> feet long. As the train passes over the point where the rails are joined, there is an audible click. |
The speed of the train in miles per hour is approximately the number of clicks heard in: | The speed of the train in miles per hour is approximately the number of clicks heard in: | ||
− | < | + | <math>\textbf{(A)}\ 20\text{ seconds} \qquad |
\textbf{(B)}\ 2\text{ minutes} \qquad | \textbf{(B)}\ 2\text{ minutes} \qquad | ||
\textbf{(C)}\ 1\frac{1}{2}\text{ minutes}\qquad | \textbf{(C)}\ 1\frac{1}{2}\text{ minutes}\qquad | ||
− | \textbf{(D)}\ 5\text{ minutes}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 5\text{ minutes}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 31|Solution]] | [[1953 AHSME Problems/Problem 31|Solution]] | ||
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Each angle of a rectangle is trisected. The intersections of the pairs of trisectors adjacent to the same side always form: | Each angle of a rectangle is trisected. The intersections of the pairs of trisectors adjacent to the same side always form: | ||
− | < | + | <math>\textbf{(A)}\ \text{a square} \qquad |
\textbf{(B)}\ \text{a rectangle} \qquad | \textbf{(B)}\ \text{a rectangle} \qquad | ||
\textbf{(C)}\ \text{a parallelogram with unequal sides}\ \textbf{(D)}\ \text{a rhombus}\qquad | \textbf{(C)}\ \text{a parallelogram with unequal sides}\ \textbf{(D)}\ \text{a rhombus}\qquad | ||
− | \textbf{(E)}\ \text{a quadrilateral with no special properties} <math> | + | \textbf{(E)}\ \text{a quadrilateral with no special properties} </math> |
[[1953 AHSME Problems/Problem 32|Solution]] | [[1953 AHSME Problems/Problem 32|Solution]] | ||
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==Problem 33== | ==Problem 33== | ||
− | The perimeter of an isosceles right triangle is < | + | The perimeter of an isosceles right triangle is <math>2p</math>. Its area is: |
− | < | + | <math>\textbf{(A)}\ (2+\sqrt{2})p \qquad |
\textbf{(B)}\ (2-\sqrt{2})p \qquad | \textbf{(B)}\ (2-\sqrt{2})p \qquad | ||
\textbf{(C)}\ (3-2\sqrt{2})p^2\ | \textbf{(C)}\ (3-2\sqrt{2})p^2\ | ||
\textbf{(D)}\ (1-2\sqrt{2})p^2\qquad | \textbf{(D)}\ (1-2\sqrt{2})p^2\qquad | ||
− | \textbf{(E)}\ (3+2\sqrt{2})p^2 <math> | + | \textbf{(E)}\ (3+2\sqrt{2})p^2 </math> |
[[1953 AHSME Problems/Problem 33|Solution]] | [[1953 AHSME Problems/Problem 33|Solution]] | ||
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==Problem 34== | ==Problem 34== | ||
− | If one side of a triangle is < | + | If one side of a triangle is <math>12</math> inches and the opposite angle is <math>30^{\circ}</math>, then the diameter of the circumscribed circle is: |
− | < | + | <math>\textbf{(A)}\ 18\text{ inches} \qquad |
\textbf{(B)}\ 30\text{ inches} \qquad | \textbf{(B)}\ 30\text{ inches} \qquad | ||
\textbf{(C)}\ 24\text{ inches} \qquad | \textbf{(C)}\ 24\text{ inches} \qquad | ||
− | \textbf{(D)}\ 20\text{ inches}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 20\text{ inches}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 34|Solution]] | [[1953 AHSME Problems/Problem 34|Solution]] | ||
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==Problem 35== | ==Problem 35== | ||
− | If < | + | If <math>f(x)=\frac{x(x-1)}{2}</math>, then <math>f(x+2)</math> equals: |
− | < | + | <math>\textbf{(A)}\ f(x)+f(2) \qquad |
\textbf{(B)}\ (x+2)f(x) \qquad | \textbf{(B)}\ (x+2)f(x) \qquad | ||
\textbf{(C)}\ x(x+2)f(x) \qquad | \textbf{(C)}\ x(x+2)f(x) \qquad | ||
− | \textbf{(D)}\ \frac{xf(x)}{x+2}\ \textbf{(E)}\ \frac{(x+2)f(x+1)}{x} <math> | + | \textbf{(D)}\ \frac{xf(x)}{x+2}\ \textbf{(E)}\ \frac{(x+2)f(x+1)}{x} </math> |
[[1953 AHSME Problems/Problem 35|Solution]] | [[1953 AHSME Problems/Problem 35|Solution]] | ||
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==Problem 36== | ==Problem 36== | ||
− | Determine < | + | Determine <math>m</math> so that <math>4x^2-6x+m</math> is divisible by <math>x-3</math>. The obtained value, <math>m</math>, is an exact divisor of: |
− | < | + | <math>\textbf{(A)}\ 12 \qquad |
\textbf{(B)}\ 20 \qquad | \textbf{(B)}\ 20 \qquad | ||
\textbf{(C)}\ 36 \qquad | \textbf{(C)}\ 36 \qquad | ||
\textbf{(D)}\ 48 \qquad | \textbf{(D)}\ 48 \qquad | ||
− | \textbf{(E)}\ 64 <math> | + | \textbf{(E)}\ 64 </math> |
[[1953 AHSME Problems/Problem 36|Solution]] | [[1953 AHSME Problems/Problem 36|Solution]] | ||
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==Problem 37== | ==Problem 37== | ||
− | The base of an isosceles triangle is < | + | The base of an isosceles triangle is <math>6</math> inches and one of the equal sides is <math>12</math> inches. |
The radius of the circle through the vertices of the triangle is: | The radius of the circle through the vertices of the triangle is: | ||
− | < | + | <math>\textbf{(A)}\ \frac{7\sqrt{15}}{5} \qquad |
\textbf{(B)}\ 4\sqrt{3} \qquad | \textbf{(B)}\ 4\sqrt{3} \qquad | ||
\textbf{(C)}\ 3\sqrt{5} \qquad | \textbf{(C)}\ 3\sqrt{5} \qquad | ||
\textbf{(D)}\ 6\sqrt{3}\qquad | \textbf{(D)}\ 6\sqrt{3}\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 37|Solution]] | [[1953 AHSME Problems/Problem 37|Solution]] | ||
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==Problem 38== | ==Problem 38== | ||
− | If < | + | If <math>f(a)=a-2</math> and <math>F(a,b)=b^2+a</math>, then <math>F(3,f(4))</math> is: |
− | < | + | <math>\textbf{(A)}\ a^2-4a+7 \qquad |
\textbf{(B)}\ 28 \qquad | \textbf{(B)}\ 28 \qquad | ||
\textbf{(C)}\ 7 \qquad | \textbf{(C)}\ 7 \qquad | ||
\textbf{(D)}\ 8 \qquad | \textbf{(D)}\ 8 \qquad | ||
− | \textbf{(E)}\ 11 <math> | + | \textbf{(E)}\ 11 </math> |
[[1953 AHSME Problems/Problem 38|Solution]] | [[1953 AHSME Problems/Problem 38|Solution]] | ||
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==Problem 39== | ==Problem 39== | ||
− | The product, < | + | The product, <math>\log_a b \cdot \log_b a</math> is equal to: |
− | < | + | <math>\textbf{(A)}\ 1 \qquad |
\textbf{(B)}\ a \qquad | \textbf{(B)}\ a \qquad | ||
\textbf{(C)}\ b \qquad | \textbf{(C)}\ b \qquad | ||
\textbf{(D)}\ ab \qquad | \textbf{(D)}\ ab \qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 39|Solution]] | [[1953 AHSME Problems/Problem 39|Solution]] | ||
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The negation of the statement "all men are honest," is: | The negation of the statement "all men are honest," is: | ||
− | < | + | <math>\textbf{(A)}\ \text{no men are honest} \qquad |
\textbf{(B)}\ \text{all men are dishonest} \ | \textbf{(B)}\ \text{all men are dishonest} \ | ||
\textbf{(C)}\ \text{some men are dishonest}\qquad | \textbf{(C)}\ \text{some men are dishonest}\qquad | ||
− | \textbf{(D)}\ \text{no men are dishonest}\ \textbf{(E)}\ \text{some men are honest} <math> | + | \textbf{(D)}\ \text{no men are dishonest}\ \textbf{(E)}\ \text{some men are honest} </math> |
[[1953 AHSME Problems/Problem 40|Solution]] | [[1953 AHSME Problems/Problem 40|Solution]] | ||
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==Problem 41== | ==Problem 41== | ||
− | A girls' camp is located < | + | A girls' camp is located <math>300</math> rods from a straight road. On this road, a boys' camp is located <math>500</math> rods from the girls' camp. |
It is desired to build a canteen on the road which shall be exactly the same distance from each camp. | It is desired to build a canteen on the road which shall be exactly the same distance from each camp. | ||
The distance of the canteen from each of the camps is: | The distance of the canteen from each of the camps is: | ||
− | < | + | <math>\textbf{(A)}\ 400\text{ rods} \qquad |
\textbf{(B)}\ 250\text{ rods} \qquad | \textbf{(B)}\ 250\text{ rods} \qquad | ||
\textbf{(C)}\ 87.5\text{ rods} \qquad | \textbf{(C)}\ 87.5\text{ rods} \qquad | ||
− | \textbf{(D)}\ 200\text{ rods}\ \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(D)}\ 200\text{ rods}\ \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 41|Solution]] | [[1953 AHSME Problems/Problem 41|Solution]] | ||
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==Problem 42== | ==Problem 42== | ||
− | The centers of two circles are < | + | The centers of two circles are <math>41</math> inches apart. The smaller circle has a radius of <math>4</math> inches and the larger one has a radius of <math>5</math> inches. |
The length of the common internal tangent is: | The length of the common internal tangent is: | ||
− | < | + | <math>\textbf{(A)}\ 41\text{ inches} \qquad |
\textbf{(B)}\ 39\text{ inches} \qquad | \textbf{(B)}\ 39\text{ inches} \qquad | ||
\textbf{(C)}\ 39.8\text{ inches} \qquad | \textbf{(C)}\ 39.8\text{ inches} \qquad | ||
− | \textbf{(D)}\ 40.1\text{ inches}\ \textbf{(E)}\ 40\text{ inches} <math> | + | \textbf{(D)}\ 40.1\text{ inches}\ \textbf{(E)}\ 40\text{ inches} </math> |
[[1953 AHSME Problems/Problem 42|Solution]] | [[1953 AHSME Problems/Problem 42|Solution]] | ||
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==Problem 43== | ==Problem 43== | ||
− | If the price of an article is increased by percent < | + | If the price of an article is increased by percent <math>p</math>, then the decrease in percent of sales must not exceed <math>d</math> in order to yield the same income. |
− | The value of < | + | The value of <math>d</math> is: |
− | < | + | <math>\textbf{(A)}\ \frac{1}{1+p} \qquad |
\textbf{(B)}\ \frac{1}{1-p} \qquad | \textbf{(B)}\ \frac{1}{1-p} \qquad | ||
\textbf{(C)}\ \frac{p}{1+p} \qquad | \textbf{(C)}\ \frac{p}{1+p} \qquad | ||
\textbf{(D)}\ \frac{p}{p-1}\qquad | \textbf{(D)}\ \frac{p}{p-1}\qquad | ||
− | \textbf{(E)}\ \frac{1-p}{1+p} <math> | + | \textbf{(E)}\ \frac{1-p}{1+p} </math> |
[[1953 AHSME Problems/Problem 43|Solution]] | [[1953 AHSME Problems/Problem 43|Solution]] | ||
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In solving a problem that reduces to a quadratic equation one student makes a mistake only in the constant term of the equation and | In solving a problem that reduces to a quadratic equation one student makes a mistake only in the constant term of the equation and | ||
− | obtains < | + | obtains <math>8</math> and <math>2</math> for the roots. Another student makes a mistake only in the coefficient of the first degree term and |
− | find < | + | find <math>-9</math> and <math>-1</math> for the roots. The correct equation was: |
− | < | + | <math>\textbf{(A)}\ x^2-10x+9=0 \qquad |
\textbf{(B)}\ x^2+10x+9=0 \qquad | \textbf{(B)}\ x^2+10x+9=0 \qquad | ||
\textbf{(C)}\ x^2-10x+16=0\ | \textbf{(C)}\ x^2-10x+16=0\ | ||
\textbf{(D)}\ x^2-8x-9=0\qquad | \textbf{(D)}\ x^2-8x-9=0\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 44|Solution]] | [[1953 AHSME Problems/Problem 44|Solution]] | ||
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==Problem 45== | ==Problem 45== | ||
− | The lengths of two line segments are < | + | The lengths of two line segments are <math>a</math> units and <math>b</math> units respectively. Then the correct relation between them is: |
− | < | + | <math>\textbf{(A)}\ \frac{a+b}{2} > \sqrt{ab} \qquad |
\textbf{(B)}\ \frac{a+b}{2} < \sqrt{ab} \qquad | \textbf{(B)}\ \frac{a+b}{2} < \sqrt{ab} \qquad | ||
\textbf{(C)}\ \frac{a+b}{2}=\sqrt{ab}\ \textbf{(D)}\ \frac{a+b}{2}\leq\sqrt{ab}\qquad | \textbf{(C)}\ \frac{a+b}{2}=\sqrt{ab}\ \textbf{(D)}\ \frac{a+b}{2}\leq\sqrt{ab}\qquad | ||
− | \textbf{(E)}\ \frac{a+b}{2}\geq\sqrt{ab} <math> | + | \textbf{(E)}\ \frac{a+b}{2}\geq\sqrt{ab} </math> |
[[1953 AHSME Problems/Problem 45|Solution]] | [[1953 AHSME Problems/Problem 45|Solution]] | ||
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Instead of walking along two adjacent sides of a rectangular field, a boy took a shortcut along the diagonal of the field and | Instead of walking along two adjacent sides of a rectangular field, a boy took a shortcut along the diagonal of the field and | ||
− | saved a distance equal to < | + | saved a distance equal to <math>\frac{1}{2}</math> the longer side. The ratio of the shorter side of the rectangle to the longer side was: |
− | < | + | <math>\textbf{(A)}\ \frac{1}{2} \qquad |
\textbf{(B)}\ \frac{2}{3} \qquad | \textbf{(B)}\ \frac{2}{3} \qquad | ||
\textbf{(C)}\ \frac{1}{4} \qquad | \textbf{(C)}\ \frac{1}{4} \qquad | ||
\textbf{(D)}\ \frac{3}{4}\qquad | \textbf{(D)}\ \frac{3}{4}\qquad | ||
− | \textbf{(E)}\ \frac{2}{5} <math> | + | \textbf{(E)}\ \frac{2}{5} </math> |
[[1953 AHSME Problems/Problem 46|Solution]] | [[1953 AHSME Problems/Problem 46|Solution]] | ||
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==Problem 47== | ==Problem 47== | ||
− | If < | + | If <math>x>0</math>, then the correct relationship is: |
− | < | + | <math>\textbf{(A)}\ \log (1+x) = \frac{x}{1+x} \qquad |
\textbf{(B)}\ \log (1+x) < \frac{x}{1+x} \ | \textbf{(B)}\ \log (1+x) < \frac{x}{1+x} \ | ||
\textbf{(C)}\ \log(1+x) > x\qquad | \textbf{(C)}\ \log(1+x) > x\qquad | ||
\textbf{(D)}\ \log (1+x) < x\qquad | \textbf{(D)}\ \log (1+x) < x\qquad | ||
− | \textbf{(E)}\ \text{none of these} <math> | + | \textbf{(E)}\ \text{none of these} </math> |
[[1953 AHSME Problems/Problem 47|Solution]] | [[1953 AHSME Problems/Problem 47|Solution]] | ||
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then the ratio of the smaller base to the larger base is: | then the ratio of the smaller base to the larger base is: | ||
− | < | + | <math>\textbf{(A)}\ \frac{1}{2} \qquad |
\textbf{(B)}\ \frac{2}{3} \qquad | \textbf{(B)}\ \frac{2}{3} \qquad | ||
\textbf{(C)}\ \frac{3}{4} \qquad | \textbf{(C)}\ \frac{3}{4} \qquad | ||
\textbf{(D)}\ \frac{3}{5}\qquad | \textbf{(D)}\ \frac{3}{5}\qquad | ||
− | \textbf{(E)}\ \frac{2}{5} <math> | + | \textbf{(E)}\ \frac{2}{5} </math> |
[[1953 AHSME Problems/Problem 48|Solution]] | [[1953 AHSME Problems/Problem 48|Solution]] | ||
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==Problem 49== | ==Problem 49== | ||
− | The coordinates of < | + | The coordinates of <math>A,B</math> and <math>C</math> are <math>(5,5),(2,1)</math> and <math>(0,k)</math> respectively. |
− | The value of < | + | The value of <math>k</math> that makes <math>\overline{AC}+\overline{BC}</math> as small as possible is: |
− | < | + | <math>\textbf{(A)}\ 3 \qquad |
\textbf{(B)}\ 4\frac{1}{2} \qquad | \textbf{(B)}\ 4\frac{1}{2} \qquad | ||
\textbf{(C)}\ 3\frac{6}{7} \qquad | \textbf{(C)}\ 3\frac{6}{7} \qquad | ||
\textbf{(D)}\ 4\frac{5}{6}\qquad | \textbf{(D)}\ 4\frac{5}{6}\qquad | ||
− | \textbf{(E)}\ 2\frac{1}{7} <math> | + | \textbf{(E)}\ 2\frac{1}{7} </math> |
[[1953 AHSME Problems/Problem 49|Solution]] | [[1953 AHSME Problems/Problem 49|Solution]] | ||
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==Problem 50== | ==Problem 50== | ||
− | One of the sides of a triangle is divided into segments of < | + | One of the sides of a triangle is divided into segments of <math>6</math> and <math>8</math> units by the point of tangency of the inscribed circle. |
− | If the radius of the circle is < | + | If the radius of the circle is <math>4</math>, then the length of the shortest side of the triangle is: |
− | < | + | <math>\textbf{(A)}\ 12\text{ units} \qquad |
\textbf{(B)}\ 13\text{ units} \qquad | \textbf{(B)}\ 13\text{ units} \qquad | ||
\textbf{(C)}\ 14\text{ units} \qquad | \textbf{(C)}\ 14\text{ units} \qquad | ||
\textbf{(D)}\ 15\text{ units}\qquad | \textbf{(D)}\ 15\text{ units}\qquad | ||
− | \textbf{(E)}\ 16\text{ units} | + | \textbf{(E)}\ 16\text{ units}</math> |
[[1953 AHSME Problems/Problem 50|Solution]] | [[1953 AHSME Problems/Problem 50|Solution]] |
Revision as of 21:34, 8 October 2014
Contents
[hide]- 1 Problem 1
- 2 Problem 2
- 3 Problem 3
- 4 Problem 4
- 5 Problem 5
- 6 Problem 6
- 7 Problem 7
- 8 Problem 8
- 9 Problem 9
- 10 Problem 10
- 11 Problem 11
- 12 Problem 12
- 13 Problem 13
- 14 Problem 14
- 15 Problem 15
- 16 Problem 16
- 17 Problem 17
- 18 Problem 18
- 19 Problem 19
- 20 Problem 20
- 21 Problem 21
- 22 Problem 22
- 23 Problem 23
- 24 Problem 24
- 25 Problem 25
- 26 Problem 26
- 27 Problem 27
- 28 Problem 28
- 29 Problem 29
- 30 Problem 30
- 31 Problem 31
- 32 Problem 32
- 33 Problem 33
- 34 Problem 34
- 35 Problem 35
- 36 Problem 36
- 37 Problem 37
- 38 Problem 38
- 39 Problem 39
- 40 Problem 40
- 41 Problem 41
- 42 Problem 42
- 43 Problem 43
- 44 Problem 44
- 45 Problem 45
- 46 Problem 46
- 47 Problem 47
- 48 Problem 48
- 49 Problem 49
- 50 Problem 50
- 51 See also
Problem 1
A boy buys oranges at for cents. He will sell them at for cents. In order to make a profit of $ , he must sell:
Problem 2
A refrigerator is offered at sale at $ 250.00 less successive discounts of 20% and 15%. The sale price of the refrigerator is:
Problem 3
The factors of the expression are:
Problem 4
The roots of are:
Problem 5
If , the value of is:
Problem 6
Charles has quarters and Richard has quarters. The difference in their money in dimes is:
Problem 7
The fraction reduces to:
Problem 8
The value of at the intersection of and is:
Problem 9
The number of ounces of water needed to reduce ounces of shaving lotion containing \% alcohol to a lotion containing \% alcohol is:
Problem 10
The number of revolutions of a wheel, with fixed center and with an outside diameter of feet, required to cause a point on the rim to go one mile is:
Problem 11
A running track is the ring formed by two concentric circles. It is feet wide. The circumference of the two circles differ by about:
Problem 12
The diameters of two circles are inches and inches respectively. The ratio of the area of the smaller to the area of the larger circle is:
Problem 13
A triangle and a trapezoid are equal in area. They also have the same altitude. If the base of the triangle is 18 inches, the median of the trapezoid is:
Problem 14
Given the larger of two circles with center and radius and the smaller with center and radius . Draw . Which of the following statements is false?
Problem 15
A circular piece of metal of maximum size is cut out of a square piece and then a square piece of maximum size is cut out of the circular piece. The total amount of metal wasted is:
Problem 16
Adams plans a profit of \% on the selling price of an article and his expenses are \% of sales. The rate of markup on an article that sells for $ is:
Problem 17
A man has part of $ invested at \% and the rest at \%. If his annual return on each investment is the same, the average rate of interest which he realizes of the $4500 is:
Problem 18
One of the factors of is:
Problem 19
In the expression , the values of and are each decreased \%; the value of the expression is:
Problem 20
If , then becomes:
Problem 21
If , the value of is:
Problem 22
The logarithm of to the base is:
Problem 23
The equation has:
Problem 24
If are positive integers less than , then if:
Problem 25
In a geometric progression whose terms are positive, any term is equal to the sum of the next two following terms. then the common ratio is:
Problem 26
The base of a triangle is inches. Two lines are drawn parallel to the base, terminating in the other two sides, and dividing the triangle into three equal areas. The length of the parallel closer to the base is:
Problem 27
The radius of the first circle is inch, that of the second inch, that of the third inch and so on indefinitely. The sum of the areas of the circles is:
Problem 28
In , sides and are opposite and respectively. bisects and meets at . Then if and the correct proportion is:
Problem 29
The number of significant digits in the measurement of the side of a square whose computed area is square inches to the nearest ten-thousandth of a square inch is:
Problem 30
A house worth $ is sold by Mr. A to Mr. B at a \% loss. Mr. B sells the house back to Mr. A at a \% gain. The result of the two transactions is:
Problem 31
The rails on a railroad are feet long. As the train passes over the point where the rails are joined, there is an audible click. The speed of the train in miles per hour is approximately the number of clicks heard in:
Problem 32
Each angle of a rectangle is trisected. The intersections of the pairs of trisectors adjacent to the same side always form:
Problem 33
The perimeter of an isosceles right triangle is . Its area is:
Problem 34
If one side of a triangle is inches and the opposite angle is , then the diameter of the circumscribed circle is:
Problem 35
If , then equals:
Problem 36
Determine so that is divisible by . The obtained value, , is an exact divisor of:
Problem 37
The base of an isosceles triangle is inches and one of the equal sides is inches. The radius of the circle through the vertices of the triangle is:
Problem 38
If and , then is:
Problem 39
The product, is equal to:
Problem 40
The negation of the statement "all men are honest," is:
Problem 41
A girls' camp is located rods from a straight road. On this road, a boys' camp is located rods from the girls' camp. It is desired to build a canteen on the road which shall be exactly the same distance from each camp. The distance of the canteen from each of the camps is:
Problem 42
The centers of two circles are inches apart. The smaller circle has a radius of inches and the larger one has a radius of inches. The length of the common internal tangent is:
Problem 43
If the price of an article is increased by percent , then the decrease in percent of sales must not exceed in order to yield the same income. The value of is:
Problem 44
In solving a problem that reduces to a quadratic equation one student makes a mistake only in the constant term of the equation and obtains and for the roots. Another student makes a mistake only in the coefficient of the first degree term and find and for the roots. The correct equation was:
Problem 45
The lengths of two line segments are units and units respectively. Then the correct relation between them is:
Problem 46
Instead of walking along two adjacent sides of a rectangular field, a boy took a shortcut along the diagonal of the field and saved a distance equal to the longer side. The ratio of the shorter side of the rectangle to the longer side was:
Problem 47
If , then the correct relationship is:
Problem 48
If the larger base of an isosceles trapezoid equals a diagonal and the smaller base equals the altitude, then the ratio of the smaller base to the larger base is:
Problem 49
The coordinates of and are and respectively. The value of that makes as small as possible is:
Problem 50
One of the sides of a triangle is divided into segments of and units by the point of tangency of the inscribed circle. If the radius of the circle is , then the length of the shortest side of the triangle is:
See also
The problems on this page are copyrighted by the Mathematical Association of America's American Mathematics Competitions.