User contributions
(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)
- 20:23, 19 August 2011 (diff | hist) . . (+686) . . N 1995 AJHSME Problems/Problem 16 (Created page with "==Problem== Students from three middle schools worked on a summer project. *Seven students from Allen school worked for <math>3</math> days. *Four students from Balboa school w...")
- 20:22, 19 August 2011 (diff | hist) . . (+245) . . N 1995 AJHSME Problems/Problem 15 (Created page with "==Problem== What is the <math>100^\text{th}</math> digit to the right of the decimal point in the decimal form of <math>4/37</math>? <math>\text{(A)}\ 0 \qquad \text{(B)}\ 1 \q...")
- 20:21, 19 August 2011 (diff | hist) . . (+336) . . N 1995 AJHSME Problems/Problem 14 (Created page with "==Problem== A team won <math>40</math> of its first <math>50</math> games. How many of the remaining <math>40</math> games must this team win so it will have won exactly <math>...")
- 20:19, 19 August 2011 (diff | hist) . . (+827) . . N 1995 AJHSME Problems/Problem 13 (Created page with "==Problem== In the figure, <math>\angle A</math>, <math>\angle B</math>, and <math>\angle C</math> are right angles. If <math>\angle AEB = 40^\circ </math> and <math>\angle BED...")
- 20:15, 19 August 2011 (diff | hist) . . (+434) . . N 1993 AJHSME Problems/Problem 25 (Created page with "==Problem== A checkerboard consists of one-inch squares. A square card, <math>1.5</math> inches on a side, is placed on the board so that it covers part or all of the area of e...")
- 20:15, 19 August 2011 (diff | hist) . . (+6) . . 1993 AJHSME Problems/Problem 24 (→Problem)
- 20:15, 19 August 2011 (diff | hist) . . (+336) . . N 1993 AJHSME Problems/Problem 24 (Created page with "==Problem== What number is directly above <math>142</math> in this array of numbers? \[\begin{tabular}{cccccc} & & & 1 & & \\ & & 2 & 3 & 4 & \\ & 5 & 6 & 7 & 8 & 9 \\ 10 & 11...")
- 20:14, 19 August 2011 (diff | hist) . . (+537) . . N 1993 AJHSME Problems/Problem 23 (Created page with "==Problem== Five runners, <math>P</math>, <math>Q</math>, <math>R</math>, <math>S</math>, <math>T</math>, have a race, and <math>P</math> beats <math>Q</math>, <math>P</math> be...")
- 20:14, 19 August 2011 (diff | hist) . . (+305) . . N 1993 AJHSME Problems/Problem 22 (Created page with "==Problem== Pat Peano has plenty of 0's, 1's, 3's, 4's, 5's, 6's, 7's, 8's and 9's, but he has only twenty-two 2's. How far can he number the pages of his scrapbook with these ...")
- 20:14, 19 August 2011 (diff | hist) . . (+286) . . N 1993 AJHSME Problems/Problem 21 (Created page with "==Problem== If the length of a rectangle is increased by <math>20\% </math> and its width is increased by <math>50\% </math>, then the area is increased by <math>\text{(A)}\ 1...")
- 20:13, 19 August 2011 (diff | hist) . . (+225) . . N 1993 AJHSME Problems/Problem 20 (Created page with "==Problem== When <math>10^{93}-93</math> is expressed as a single whole number, the sum of the digits is <math>\text{(A)}\ 10 \qquad \text{(B)}\ 93 \qquad \text{(C)}\ 819 \qqua...")
- 20:13, 19 August 2011 (diff | hist) . . (+230) . . N 1993 AJHSME Problems/Problem 19 (Created page with "==Problem== <math>(1901+1902+1903+\cdots + 1993) - (101+102+103+\cdots + 193) = </math> <math>\text{(A)}\ 167,400 \qquad \text{(B)}\ 172,050 \qquad \text{(C)}\ 181,071 \qquad \...")
- 20:12, 19 August 2011 (diff | hist) . . (+697) . . N 1993 AJHSME Problems/Problem 18 (Created page with "==Problem== The rectangle shown has length <math>AC=32</math>, width <math>AE=20</math>, and <math>B</math> and <math>F</math> are midpoints of <math>\overline{AC}</math> and <m...")
- 20:10, 19 August 2011 (diff | hist) . . (+868) . . N 1993 AJHSME Problems/Problem 17 (Created page with "==Problem== Square corners, <math>5</math> units on a side, are removed from a <math>20</math> unit by <math>30</math> unit rectangular sheet of cardboard. The sides are then f...")
- 20:09, 19 August 2011 (diff | hist) . . (+185) . . N 1993 AJHSME Problems/Problem 16 (Created page with "==Problem== <math> \frac{1}{1+\frac{1}{2+\frac{1}{3}}}= </math> <math> \text{(A)}\ 81.0\qquad\text{(B)}\ 82.7\qquad\text{(C)}\ 83.0\qquad\text{(D)}\ 84.0\qquad\text{(E)}\ 84.3 ...")
- 20:08, 19 August 2011 (diff | hist) . . (+307) . . N 1993 AJHSME Problems/Problem 15 (Created page with "==Problem== The arithmetic mean (average) of four numbers is <math>85</math>. If the largest of these numbers is <math>97</math>, then the mean of the remaining three numbers i...")
- 20:07, 19 August 2011 (diff | hist) . . (+6) . . 1993 AJHSME Problems/Problem 14 (→Problem)
- 20:06, 19 August 2011 (diff | hist) . . (0) . . 1993 AJHSME Problems/Problem 14 (→Problem)
- 20:06, 19 August 2011 (diff | hist) . . (+1) . . 1993 AJHSME Problems/Problem 14 (→Problem)
- 20:06, 19 August 2011 (diff | hist) . . (+388) . . N 1993 AJHSME Problems/Problem 14 (Created page with "==Problem== The nine squares in the table shown are to be filled so that every row and every column contains each of the numbers <math>1,2,3</math>. Then <math>A+B=</math> \[\...")
- 20:05, 19 August 2011 (diff | hist) . . (+1,713) . . N 1993 AJHSME Problems/Problem 13 (Created page with "==Problem== The word "'''HELP'''" in block letters is painted in black with strokes <math>1</math> unit wide on a <math>5</math> by <math>15</math> rectangular white sign with d...")
- 20:05, 19 August 2011 (diff | hist) . . (+510) . . N 1993 AJHSME Problems/Problem 12 (Created page with "==Problem== If each of the three operation signs, <math>+</math>, <math>-</math>, <math>\times </math>, is used exactly ONCE in one of the blanks in the expression <cmath>5\hsp...")
- 20:56, 18 August 2011 (diff | hist) . . (+724) . . N 1992 AJHSME Problems/Problem 24 (Created page with "==Problem== Four circles of radius <math>3</math> are arranged as shown. Their centers are the vertices of a square. The area of the shaded region is closest to <asy> fill((3...")
- 20:55, 18 August 2011 (diff | hist) . . (+298) . . N 1992 AJHSME Problems/Problem 23 (Created page with "==Problem== If two dice are tossed, the probability that the product of the numbers showing on the tops of the dice is greater than 10 is <math> \text{(A)}\ \frac{3}{7}\qquad\t...")
- 20:55, 18 August 2011 (diff | hist) . . (+680) . . N 1992 AJHSME Problems/Problem 22 (Created page with "==Problem== Eight <math>1\times 1</math> square tiles are arranged as shown so their outside edges form a polygon with a perimeter of <math>14</math> units. Two additional tile...")
- 20:54, 18 August 2011 (diff | hist) . . (+2,058) . . N 1992 AJHSME Problems/Problem 21 (Created page with "==Problem== Northside's Drum and Bugle Corps raised money for a trip. The drummers and bugle players kept separate sales records. According to the double bar graph, in what mont...")
- 20:52, 18 August 2011 (diff | hist) . . (+1,112) . . N 1992 AJHSME Problems/Problem 20 (Created page with "==Problem== Which pattern of identical squares could NOT be folded along the lines shown to form a cube? <asy> unitsize(12); draw((0,0)--(0,-1)--(1,-1)--(1,-2)--(2,-2)--(2,-3)-...")
- 20:51, 18 August 2011 (diff | hist) . . (+492) . . N 1992 AJHSME Problems/Problem 19 (Created page with "==Problem== The distance between the <math>5^\text{th}</math> and <math>26^\text{th}</math> exits on an interstate highway is <math>118</math> miles. If any two exits are at le...")
- 20:51, 18 August 2011 (diff | hist) . . (+418) . . N 1992 AJHSME Problems/Problem 18 (Created page with "==Problem== On a trip, a car traveled <math>80</math> miles in an hour and a half, then was stopped in traffic for <math>30</math> minutes, then traveled <math>100</math> miles ...")
- 20:50, 18 August 2011 (diff | hist) . . (+510) . . N 1992 AJHSME Problems/Problem 17 (Created page with "==Problem== The sides of a triangle have lengths <math>6.5</math>, <math>10</math>, and <math>s</math>, where <math>s</math> is a whole number. What is the smallest possible va...")
- 20:49, 18 August 2011 (diff | hist) . . (+1,564) . . N 1992 AJHSME Problems/Problem 16 (Created page with "==Problem== <asy> draw(ellipse((0,-5),10,3)); fill((-10,-5)--(10,-5)--(10,5)--(-10,5)--cycle,white); draw(ellipse((0,0),10,3)); draw((10,0)--(10,-5)); draw((-10,0)--(-10,-5)); ...")
- 20:46, 18 August 2011 (diff | hist) . . (+289) . . N 1992 AJHSME Problems/Problem 15 (Created page with "==Problem== What is the <math>1992^\text{nd}</math> letter in this sequence? <cmath>\text{ABCDEDCBAABCDEDCBAABCDEDCBAABCDEDC}\cdots </cmath> <math>\text{(A)}\ \text{A} \qquad ...")
- 12:39, 18 August 2011 (diff | hist) . . (-61) . . 1993 AHSME Problems/Problem 1
- 12:16, 18 August 2011 (diff | hist) . . (-96) . . AMC 12 Problems and Solutions
- 12:15, 18 August 2011 (diff | hist) . . (+425) . . AMC 12 Problems and Solutions
- 11:05, 18 August 2011 (diff | hist) . . (+51) . . AMC 12 Problems and Solutions
- 21:36, 16 August 2011 (diff | hist) . . (+51) . . AMC 12 Problems and Solutions
- 20:19, 16 August 2011 (diff | hist) . . (-25) . . 1979 USAMO
- 20:17, 16 August 2011 (diff | hist) . . (+212) . . N 1979 USAMO Problems/Problem 5 (Created page with "==Problem== Let <math>A_1,A_2,...,A_{n+1}</math> be distinct subsets of <math>[n]</math> with <math>|A_1|=|A_2|=\cdots =|A_n|=3</math>. Prove that <math>|A_i\cap A_j|=1</math> ...")
- 20:17, 16 August 2011 (diff | hist) . . (+1,352) . . N 1979 USAMO Problems/Problem 4 (Created page with "==Problem== <math>P</math> lies between the rays <math>OA</math> and <math>OB</math>. Find <math>Q</math> on <math>OA</math> and <math>R</math> on <math>OB</math> collinear with...")
- 20:16, 16 August 2011 (diff | hist) . . (+432) . . N 1979 USAMO Problems/Problem 3 (Created page with "==Problem== <math>a_1, a_2, \ldots, a_n</math> is an arbitrary sequence of positive integers. A member of the sequence is picked at random. Its value is <math>a</math>. Another...")
- 20:13, 16 August 2011 (diff | hist) . . (+409) . . N 1979 USAMO Problems/Problem 2 (Created page with "==Problem== <math>N</math> is the north pole. <math>A</math> and <math>B</math> are points on a great circle through <math>N</math> equidistant from <math>N</math>. <math>C</mat...")
- 20:02, 16 August 2011 (diff | hist) . . (+201) . . 1978 USAMO Problems (→Problem 5)
- 20:02, 16 August 2011 (diff | hist) . . (+181) . . 1978 USAMO Problems (→Problem 4)
- 20:01, 16 August 2011 (diff | hist) . . (+230) . . 1978 USAMO Problems (→Problem 3)
- 19:59, 16 August 2011 (diff | hist) . . (+302) . . 1978 USAMO Problems (→Problem 2)
- 19:59, 16 August 2011 (diff | hist) . . (+127) . . 1978 USAMO Problems (→Problem 1)
- 15:22, 15 August 2011 (diff | hist) . . (+389) . . 2004 AMC 8 Problems
- 14:55, 15 August 2011 (diff | hist) . . (-1,470) . . 2004 AMC 8 Problems (Blanked the page)
- 14:49, 15 August 2011 (diff | hist) . . (+383) . . N 1994 AJHSME Problems/Problem 25 (Created page with "==Problem== Find the sum of the digits in the answer to <math>\underbrace{9999\cdots 99}_{94\text{ nines}} \times \underbrace{4444\cdots 44}_{94\text{ fours}}</math> where a s...")
(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)