User contributions
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- 15:54, 8 February 2018 (diff | hist) . . (-1) . . 2018 AMC 10A Problems/Problem 2 (→See Also)
- 15:54, 8 February 2018 (diff | hist) . . (+78) . . 2018 AMC 10A Problems/Problem 2
- 15:53, 8 February 2018 (diff | hist) . . (0) . . 2018 AMC 10A Problems/Problem 1 (→See Also)
- 15:53, 8 February 2018 (diff | hist) . . (+74) . . 2018 AMC 10A Problems/Problem 1 (→Solution)
- 14:57, 8 February 2018 (diff | hist) . . (+395) . . N 2018 AMC 10A Problems/Problem 21 (Created page with "Which of the following describes the set of values of <math>a</math> for which the curves <math>x^2+y^2=a^2</math> and <math>y=x^2-a</math> in the real <math>xy</math>-plane i...")
- 14:56, 8 February 2018 (diff | hist) . . (+378) . . N 2018 AMC 10A Problems/Problem 18 (Created page with "How many nonnegative integers can be written in the form <cmath>a_7\cdot3^7+a_6\cdot3^6+a_5\cdot3^5+a_4\cdot3^4+a_3\cdot3^3+a_2\cdot3^2+a_1\cdot3^1+a_0\cdot3^0,</cmath> where...")
- 14:55, 8 February 2018 (diff | hist) . . (+819) . . N 2018 AMC 10A Problems/Problem 9 (Created page with "All of the triangles in the diagram below are similar to iscoceles triangle <math>ABC</math>, in which <math>AB=AC</math>. Each of the 7 smallest triangles has area 1, and <ma...")
- 14:55, 8 February 2018 (diff | hist) . . (+407) . . N 2018 AMC 10A Problems/Problem 8 (Created page with "Joe has a collection of 23 coins, consisting of 5-cent coins, 10-cent coins, and 25-cent coins. He has 3 more 10-cent coins than 5-cent coins, and the total value of his colle...")
- 14:54, 8 February 2018 (diff | hist) . . (+277) . . N 2018 AMC 10A Problems/Problem 7 (Created page with "For how many (not necessarily positive) integer values of <math>n</math> is the value of <math>4000\cdot \left(\tfrac{2}{5}\right)^n</math> an integer? <math> \textbf{(A) }3...")
- 14:52, 8 February 2018 (diff | hist) . . (+648) . . N 2018 AMC 10A Problems/Problem 5 (Created page with "Alice, Bob, and Charlie were on a hike and were wondering how far away the nearest town was. When Alice said, "We are at least 6 miles away," Bob replied, "We are at most 5 mi...")
- 14:51, 8 February 2018 (diff | hist) . . (+381) . . N 2018 AMC 10A Problems/Problem 4 (Created page with "How many ways can a student schedule 3 mathematics courses -- algebra, geometry, and number theory -- in a 6-period day if no two mathematics courses can be taken in consecuti...")
- 14:29, 8 February 2018 (diff | hist) . . (+415) . . N 2018 AMC 10A Problems/Problem 22 (Created page with "Let <math>a, b, c,</math> and <math>d</math> be positive integers such that <math>\gcd(a, b)=24</math>, <math>\gcd(b, c)=36</math>, <math>\gcd(c, d)=54</math>, and <math>70<\g...")
- 14:27, 8 February 2018 (diff | hist) . . (+578) . . N 2018 AMC 10A Problems/Problem 6 (Created page with "Sangho uploaded a video to a website where viewers can vote that they like or dislike a video. Each video begins with a score of 0, and the score increases by 1 for each like...")
- 14:24, 8 February 2018 (diff | hist) . . (+671) . . N 2018 AMC 10A Problems/Problem 15 (Created page with "Two circles of radius 5 are externally tangent to each other and are internally tangent to a circle of radius 13 at points <math>A</math> and <math>B</math>, as shown in the...")
- 14:22, 8 February 2018 (diff | hist) . . (+424) . . N 2018 AMC 10A Problems/Problem 16 (Created page with "Right triangle <math>ABC</math> has leg lengths <math>AB=20</math> and <math>BC=21</math>. Including <math>\overline{AB}</math> and <math>\overline{BC}</math>, how many line s...")
- 14:16, 8 February 2018 (diff | hist) . . (+586) . . N 2018 AMC 10A Problems/Problem 24 (Created page with "Triangle <math>ABC</math> with <math>AB=50</math> and <math>AC=10</math> has area <math>120</math>. Let <math>D</math> be the midpoint of <math>\overline{AB}</math>, and let <...")
- 14:14, 8 February 2018 (diff | hist) . . (+474) . . N 2018 AMC 10A Problems/Problem 19 (Created page with "A number <math>m</math> is randomly selected from the set <math>\{11,13,15,17,19\}</math>, and a number <math>n</math> is randomly selected from <math>\{1999,2000,2001,\ldots,...")
- 14:13, 8 February 2018 (diff | hist) . . (+927) . . N 2018 AMC 10A Problems/Problem 23 (Created page with "Farmer Pythagoras has a field in the shape of a right triangle. The right triangle's legs have lengths 3 and 4 units. In the corner where those sides meet at a right angle, he...")
- 14:12, 8 February 2018 (diff | hist) . . (+433) . . N 2018 AMC 10A Problems/Problem 17 (Created page with "Let <math>S</math> be a set of 6 integers taken from <math>\{1,2,\dots,12\}</math> with the property that if <math>a</math> and <math>b</math> are elements of <math>S</math> w...")
- 14:12, 8 February 2018 (diff | hist) . . (+383) . . N 2018 AMC 10A Problems/Problem 11 (Created page with "When 7 fair standard 6-sided dice are thrown, the probability that the sum of the numbers on the top faces is 10 can be written as <cmath>\frac{n}{6^7},</cmath>where <math>n</...")
- 14:10, 8 February 2018 (diff | hist) . . (+283) . . N 2018 AMC 10A Problems/Problem 12 (Created page with "How many ordered pairs of real numbers <math>(x,y)</math> satisfy the following system of equations? \begin{align*}x+3y&=3\\ \big||x|-|y|\big|&=1\end{align*} <math>\textbf{(A)...")
- 14:10, 8 February 2018 (diff | hist) . . (+365) . . N 2018 AMC 10A Problems/Problem 3 (Created page with "A unit of blood expires after <math>10!=10\cdot 9 \cdot 8 \cdots 1</math> seconds. Yasin donates a unit of blood at noon of January 1. On what day does his unit of blood expir...")
- 14:09, 8 February 2018 (diff | hist) . . (+782) . . N 2018 AMC 10A Problems/Problem 25 (Created page with "For a positive integer <math>n</math> and nonzero digits <math>a</math>, <math>b</math>, and <math>c</math>, let <math>A_n</math> be the <math>n</math>-digit integer each of w...")
- 14:08, 8 February 2018 (diff | hist) . . (+590) . . N 2018 AMC 10A Problems/Problem 2 (Created page with "Liliane has <math>50\%</math> more soda than Jacqueline, and Alice has <math>25\%</math> more soda than Jacqueline. What is the relationship between the amounts of soda that L...")
- 14:07, 8 February 2018 (diff | hist) . . (+305) . . N 2018 AMC 10A Problems/Problem 10 (Created page with "Suppose that real number <math>x</math> satisfies <cmath>\sqrt{49-x^2}-\sqrt{25-x^2}=3</cmath>. What is the value of <math>\sqrt{49-x^2}+\sqrt{25-x^2}</math>? <math> \textbf{...")
- 14:06, 8 February 2018 (diff | hist) . . (+756) . . N 2018 AMC 10A Problems/Problem 20 (Created page with "A scanning code consists of a <math>7 \times 7</math> grid of squares, with some of its squares colored black and the rest colored white. There must be at least one square of...")
- 14:03, 8 February 2018 (diff | hist) . . (-66) . . 2018 AMC 10A Problems/Problem 13
- 14:03, 8 February 2018 (diff | hist) . . (+680) . . N 2018 AMC 10A Problems/Problem 13 (Created page with "A paper triangle with sides of lengths 3,4, and 5 inches, as shon, is folded so that point <math>A</math> falls on point <math>B</math>. What is the length in inches of the cr...")
- 14:00, 8 February 2018 (diff | hist) . . (+234) . . N 2018 AMC 10A Problems/Problem 14 (Created page with "What is the greatest integer less than or equal to <cmath>\frac{3^{100}+2^{100}}{3^{96}+2^{96}}?</cmath> <math> \textbf{(A) }80\qquad \textbf{(B) }81 \qquad \textbf{(C) }96 \...")
- 13:58, 8 February 2018 (diff | hist) . . (-40) . . 2018 AMC 10A Answer Key (current)
- 13:57, 8 February 2018 (diff | hist) . . (+111) . . 2018 AMC 10A Answer Key
- 13:54, 8 February 2018 (diff | hist) . . (+30) . . N 2018 AMC 10A Answer Key (Created page with " BAEED BECEA ECDAD DCDEB EDDDD")
- 13:50, 8 February 2018 (diff | hist) . . (+1,466) . . 2018 AMC 10A (current)
- 21:41, 24 January 2018 (diff | hist) . . (-36) . . 1950 AHSME Problems/Problem 36 (→Solution)
- 11:01, 16 February 2017 (diff | hist) . . (+18) . . 2017 AMC 10B Problems
- 11:00, 16 February 2017 (diff | hist) . . (+1) . . 2017 AMC 10B Problems (→Problem 3)
- 10:59, 16 February 2017 (diff | hist) . . (+1,392) . . 2017 AMC 10B Problems
- 10:53, 16 February 2017 (diff | hist) . . (-64) . . 2017 AMC 10B Problems/Problem 22
- 10:52, 16 February 2017 (diff | hist) . . (-5) . . 2017 AMC 10B Problems/Problem 21
- 10:51, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 20 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=19|num-a=21}} {{MAA Notice}}")
- 10:51, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 19 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=18|num-a=20}} {{MAA Notice}}")
- 10:51, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 18 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=17|num-a=19}} {{MAA Notice}}")
- 10:50, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 17 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=16|num-a=18}} {{MAA Notice}}")
- 10:50, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 16 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=15|num-a=17}} {{MAA Notice}}")
- 10:50, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 15 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=14|num-a=16}} {{MAA Notice}}")
- 10:49, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 13 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=12|num-a=14}} {{MAA Notice}}")
- 10:49, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 12 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=11|num-a=13}} {{MAA Notice}}")
- 10:48, 16 February 2017 (diff | hist) . . (+124) . . N 2017 AMC 10B Problems/Problem 11 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=10|num-a=12}} {{MAA Notice}}")
- 10:48, 16 February 2017 (diff | hist) . . (+123) . . N 2017 AMC 10B Problems/Problem 10 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=9|num-a=11}} {{MAA Notice}}")
- 10:48, 16 February 2017 (diff | hist) . . (+123) . . N 2017 AMC 10B Problems/Problem 9 (Created page with "==Problem== Placeholder ==Solution== Placeholder ==See Also== {{AMC10 box|year=2017|ab=B|num-b=8|num-a=10}} {{MAA Notice}}")
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