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- 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...")
- 14:49, 15 August 2011 (diff | hist) . . (+500) . . N 1994 AJHSME Problems/Problem 24 (Created page with "==Problem== A <math>2</math> by <math>2</math> square is divided into four <math>1</math> by <math>1</math> squares. Each of the small squares is to be painted either green or ...")
- 14:48, 15 August 2011 (diff | hist) . . (+370) . . N 1994 AJHSME Problems/Problem 23 (Created page with "==Problem== If <math>X</math>, <math>Y</math> and <math>Z</math> are different digits, then the largest possible <math>3-</math>digit sum for <math>\begin{tabular}{ccc} X & X &...")
- 14:48, 15 August 2011 (diff | hist) . . (+747) . . N 1994 AJHSME Problems/Problem 22 (Created page with "==Problem== The two wheels shown below are spun and the two resulting numbers are added. The probability that the sum is even is <asy> draw(circle((0,0),3)); draw(circle((7,0)...")
- 14:47, 15 August 2011 (diff | hist) . . (+334) . . N 1994 AJHSME Problems/Problem 21 (Created page with "==Problem== A gumball machine contains <math>9</math> red, <math>7</math> white, and <math>8</math> blue gumballs. The least number of gumballs a person must buy to be sure of ...")
- 14:47, 15 August 2011 (diff | hist) . . (+455) . . N 1994 AJHSME Problems/Problem 20 (Created page with "==Problem== Let <math>W,X,Y</math> and <math>Z</math> be four different digits selected from the set <math>\{ 1,2,3,4,5,6,7,8,9\}.</math> If the sum <math>\dfrac{W}{X} + \dfra...")
- 14:46, 15 August 2011 (diff | hist) . . (+941) . . N 1994 AJHSME Problems/Problem 19 (Created page with "==Problem== Around the outside of a <math>4</math> by <math>4</math> square, construct four semicircles (as shown in the figure) with the four sides of the square as their diame...")
- 14:45, 15 August 2011 (diff | hist) . . (+1,815) . . N 1994 AJHSME Problems/Problem 18 (Created page with "==Problem== Mike leaves home and drives slowly east through city traffic. When he reaches the highway he drives east more rapidly until he reaches the shopping mall where he st...")
- 14:44, 15 August 2011 (diff | hist) . . (+569) . . N 1994 AJHSME Problems/Problem 17 (Created page with "==Problem== Pauline Bunyan can shovel snow at the rate of <math>20</math> cubic yards for the first hour, <math>19</math> cubic yards for the second, <math>18</math> for the thi...")
- 14:43, 15 August 2011 (diff | hist) . . (+290) . . N 1994 AJHSME Problems/Problem 16 (Created page with "==Problem== The perimeter of one square is <math>3</math> times the perimeter of another square. The area of the larger square is how many times the area of the smaller square?...")
- 14:42, 15 August 2011 (diff | hist) . . (+1,974) . . N 1994 AJHSME Problems/Problem 15 (Created page with "==Problem== If this path is to continue in the same pattern: <asy> unitsize(24); draw((0,0)--(1,0)--(1,1)--(2,1)--(2,0)--(3,0)--(3,1)--(4,1)--(4,0)--(5,0)--(5,1)--(6,1)); draw(...")
- 14:40, 15 August 2011 (diff | hist) . . (+356) . . N 1994 AJHSME Problems/Problem 14 (Created page with "==Problem== Two children at a time can play pairball. For <math>90</math> minutes, with only two children playing at time, five children take turns so that each one plays the s...")
- 14:40, 15 August 2011 (diff | hist) . . (+269) . . N 1994 AJHSME Problems/Problem 13 (Created page with "==Problem== The number halfway between <math>\dfrac{1}{6}</math> and <math>\dfrac{1}{4}</math> is <math>\text{(A)}\ \dfrac{1}{10} \qquad \text{(B)}\ \dfrac{1}{5} \qquad \text{(...")
- 14:40, 15 August 2011 (diff | hist) . . (+13) . . 1994 AJHSME Problems/Problem 12
- 14:39, 15 August 2011 (diff | hist) . . (+470) . . N 1994 AJHSME Problems/Problem 12 (Created page with "A lucky year is one in which at least one date, when written in the form month/day/year, has the following property: ''The product of the month times the day equals the last two ...")
- 14:39, 15 August 2011 (diff | hist) . . (+488) . . N 1994 AJHSME Problems/Problem 11 (Created page with "==Problem== Last summer <math>100</math> students attended basketball camp. Of those attending, <math>52</math> were boys and <math>48</math> were girls. Also, <math>40</math>...")
- 14:39, 15 August 2011 (diff | hist) . . (+240) . . N 1994 AJHSME Problems/Problem 10 (Created page with "==Problem== For how many positive integer values of <math>N</math> is the expression <math>\dfrac{36}{N+2}</math> an integer? <math>\text{(A)}\ 7 \qquad \text{(B)}\ 8 \qquad \t...")
- 14:38, 15 August 2011 (diff | hist) . . (+517) . . N 1994 AJHSME Problems/Problem 9 (Created page with "==Problem== A shopper buys a <math>100</math> dollar coat on sale for <math>20\% </math> off. An additional <math>5</math> dollars are taken off the sale price by using a disco...")
- 14:37, 15 August 2011 (diff | hist) . . (+214) . . N 1994 AJHSME Problems/Problem 8 (Created page with "==Problem== For how many three-digit whole numbers does the sum of the digits equal <math>25</math>? <math>\text{(A)}\ 2 \qquad \text{(B)}\ 4 \qquad \text{(C)}\ 6 \qquad \text{...")
- 14:35, 15 August 2011 (diff | hist) . . (+164) . . 1994 AJHSME Problems/Problem 7
- 14:34, 15 August 2011 (diff | hist) . . (+550) . . N 1994 AJHSME Problems/Problem 7 (Created page with "If <math>\angle A = 60^\circ </math>, <math>\angle E = 40^\circ </math> and <math>\angle C = 30^\circ </math>, then <math>\angle BDC = </math> <asy> pair A,B,C,D,EE; A = origin;...")
- 19:51, 14 August 2011 (diff | hist) . . (+519) . . 2006 AMC 8 (→Problem 5)
- 19:49, 14 August 2011 (diff | hist) . . (+774) . . 2006 AMC 8 (→Problem 4)
- 19:48, 14 August 2011 (diff | hist) . . (+323) . . 2006 AMC 8 (→Problem 3)
- 19:47, 14 August 2011 (diff | hist) . . (+262) . . 2006 AMC 8 (→Problem 2)
- 16:07, 14 August 2011 (diff | hist) . . (+1) . . 2006 AMC 8 (→Problem 1)
- 16:07, 14 August 2011 (diff | hist) . . (-31) . . 2006 AMC 8 (→Problem 1)
- 16:06, 14 August 2011 (diff | hist) . . (+19) . . 2006 AMC 8 (→Problem 1)
- 16:06, 14 August 2011 (diff | hist) . . (+292) . . 2006 AMC 8 (→Problem 1)
- 16:03, 14 August 2011 (diff | hist) . . (-7,236) . . 2006 AMC 8 (Replaced content with "==Problem 1== ==Problem 2== ==Problem 3== ==Problem 4== ==Problem 5== ==Problem 6== ==Problem 7== ==Problem 8== ==Problem 9== ==Problem 10== ==Problem 11== ==Problem 12== ==P...")
- 15:53, 14 August 2011 (diff | hist) . . (+257) . . N 2003 AMC 12B/Problem 1 (Created page with "==Problem== Which of the following is the same as <cmath> \frac{2-4+6-8+10-12+14}{3-6+9-12+15-18+21}? </cmath> <math> \textbf{(A)}\ -1\qquad\textbf{(B)}\ -\frac{2}3\qquad\text...")
- 15:52, 14 August 2011 (diff | hist) . . (+469) . . N 1970 AHSME (Created page with "==Problem 1== ==Problem 2== ==Problem 3== ==Problem 4== ==Problem 5== ==Problem 6== ==Problem 7== ==Problem 8== ==Problem 9== ==Problem 10== ==Problem 11== ==Problem 1...")
- 14:10, 14 August 2011 (diff | hist) . . (+73) . . N 1978 USAMO Problems (Created page with "==Problem 1== ==Problem 2== ==Problem 3== ==Problem 4== ==Problem 5==")
- 14:09, 14 August 2011 (diff | hist) . . (-95) . . 1984 USAMO Problems/Problem 2 (Blanked the page)
- 14:05, 14 August 2011 (diff | hist) . . (+73) . . N 1986 USAMO (Created page with "==Problem 1== ==Problem 2== ==Problem 3== ==Problem 4== ==Problem 5==")
- 13:29, 14 August 2011 (diff | hist) . . (-1) . . 2009 AMC 8 Problems/Problem 22
- 13:29, 14 August 2011 (diff | hist) . . (+222) . . N 2009 AMC 8 Problems/Problem 22 (Created page with "==Problem== How many whole numbers between 1 and 1000 do [b]not[/b] contain the digit 1? <math> \textbf{(A)}\ 512 \qquad \textbf{(B)}\ 648 \qquad \textbf{(C)}\ 720 \qquad \text...")
- 13:29, 14 August 2011 (diff | hist) . . (+561) . . N 2009 AMC 8 Problems/Problem 21 (Created page with "==Problem== Andy and Bethany have a rectangular array of numbers with <math> 40</math> rows and <math> 75</math> columns. Andy adds the numbers in each row. The average of his <...")
- 13:28, 14 August 2011 (diff | hist) . . (+13) . . 2009 AMC 8 Problems/Problem 20
- 13:28, 14 August 2011 (diff | hist) . . (+342) . . N 2009 AMC 8 Problems/Problem 20 (Created page with "How many non-congruent triangles have vertices at three of the eight points in the array shown below? <asy>dot((0,0)); dot((0,.5)); dot((.5,0)); dot((.5,.5)); dot((1,0)); dot((1...")
- 13:28, 14 August 2011 (diff | hist) . . (+327) . . N 2009 AMC 8 Problems/Problem 19 (Created page with "==Problems== Two angles of an isosceles triangle measure <math> 70^\circ</math> and <math> x^\circ</math>. What is the sum of the three possible values of <math> x</math>? <math...")
- 13:27, 14 August 2011 (diff | hist) . . (+1,040) . . N 2009 AMC 8 Problems/Problem 18 (Created page with "The diagram represents a <math> 7</math>-foot-by-<math> 7</math>-foot floor that is tiled with <math> 1</math>-square-foot black tiles and white tiles. Notice that the corners ha...")
- 13:27, 14 August 2011 (diff | hist) . . (+462) . . N 2009 AMC 8 Problems/Problem 17 (Created page with "==Problem== The positive integers <math> x</math> and <math> y</math> are the two smallest positive integers for which the product of <math> 360</math> and <math> x</math> is a ...")
- 13:26, 14 August 2011 (diff | hist) . . (+240) . . N 2009 AMC 8 Problems/Problem 16 (Created page with "==Problem== How many <math> 3</math>-digit positive integers have digits whose product equals <math> 24</math>? <math> \textbf{(A)}\ 12 \qquad \textbf{(B)}\ 15 \qquad \textbf{(...")
- 13:26, 14 August 2011 (diff | hist) . . (+636) . . N 2009 AMC 8 Problems/Problem 15 (Created page with "==Problem== A recipe that makes <math> 5</math> servings of hot chocolate requires <math> 2</math> squares of chocolate, <math> \frac{1}{4}</math> cup sugar, <math> 1</math> cup...")
- 13:25, 14 August 2011 (diff | hist) . . (+548) . . N 2009 AMC 8 Problems/Problem 14 (Created page with "==Problem== Austin and Temple are <math> 50</math> miles apart along Interstate 35. Bonnie drove from Austin to her daughter's house in Temple, averaging <math> 60</math> miles ...")
- 13:25, 14 August 2011 (diff | hist) . . (+385) . . N 2009 AMC 8 Problems/Problem 13 (Created page with "==Problem== A three-digit integer contains one of each of the digits <math> 1</math>, <math> 3</math>, and <math> 5</math>. What is the probability that the integer is divisible...")
- 13:25, 14 August 2011 (diff | hist) . . (-249) . . 2009 AMC 8 Problems/Problem 12
- 13:24, 14 August 2011 (diff | hist) . . (-2) . . 2009 AMC 8 Problems/Problem 12
- 13:24, 14 August 2011 (diff | hist) . . (+2) . . 2009 AMC 8 Problems/Problem 12
- 13:23, 14 August 2011 (diff | hist) . . (+854) . . N 2009 AMC 8 Problems/Problem 12 (Created page with "==Problem== The two spinners shown are spun once and each lands on one of the numbered sectors. What is the probability that the sum of the numbers in the two sectors is prime? <...")
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