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• 05:03, 19 February 2012 (diff | hist) . . (+304)‎ . . N 1989 AHSME Problems/Problem 6 ‎ (Created page with "If <math>a,b>0</math> and the triangle in the first quadrant bounded by the co-ordinate axes and the graph of <math>ax+by=6</math> has area 6, then <math>ab=</math> <math> \math...")
• 04:59, 19 February 2012 (diff | hist) . . (+352)‎ . . N 1989 AHSME Problems/Problem 26 ‎ (Created page with "A regular octahedron is formed by joining the centers of adjoining faces of a cube. The ratio of the volume of the octahedron to the volume of the cube is <math> \mathrm{(A) \fr...")
• 04:52, 19 February 2012 (diff | hist) . . (+370)‎ . . N 1989 AHSME Problems/Problem 13 ‎ (Created page with "Let <math>a</math>, <math>b</math>, <math>c</math>, and <math>d</math> be integers with <math>a<2b</math>, <math>b<3c</math>, and <math>c<4d</math>. If <math>d<100</math>, the la...")
• 04:47, 19 February 2012 (diff | hist) . . (+377)‎ . . N 1989 AHSME Problems/Problem 19 ‎ (Created page with "A triangle is inscribed in a circle. The vertices of the triangle divide the circle into three arcs of lengths 3, 4, and 5. What is the area of the triangle? <math> \mathrm{(A) ...")
• 04:44, 19 February 2012 (diff | hist) . . (+353)‎ . . N 1989 AHSME Problems/Problem 18 ‎ (Created page with "The set of all real numbers for which <cmath>x+\sqrt{x^2+1}-\frac{1}{x+\sqrt{x^2+1}}</cmath> is a rational number is the set of all (A) integers <math>x</math> (B) rational <m...")
• 04:22, 19 February 2012 (diff | hist) . . (+182)‎ . . N 1989 AHSME Problems/Problem 14 ‎ (Created page with "<math>\cot 10+\tan 5=</math> <math> \mathrm{(A) \csc 5 } \qquad \mathrm{(B) \csc 10 } \qquad \mathrm{(C) \sec 5 } \qquad \mathrm{(D) \sec 10 } \qquad \mathrm{(E) \sin 15 } </m...")
• 04:17, 19 February 2012 (diff | hist) . . (+287)‎ . . N 1989 AHSME Problems/Problem 28 ‎ (Created page with "Find the sum of the roots of <math>\tan^2x-9\tan x+1=0</math> that are between <math>x=0</math> and <math>x=2\pi</math> radians. <math> \mathrm{(A) \frac{\pi}{2} } \qquad \math...")
• 04:04, 19 February 2012 (diff | hist) . . (+238)‎ . . N 1989 AHSME Problems/Problem 2 ‎ (Created page with "<math>\sqrt{\frac{1}{9}+\frac{1}{16}}=</math> (A) <math>\frac{1}{5}</math>\hskip.5in (B)<math>\frac{1}{4}</math>\hskip.5in (C)<math>\frac{2}{7}</math>\hskip.5in (D)<math>\...")
• 22:48, 18 February 2012 (diff | hist) . . (+155)‎ . . N 1988 AHSME Problems/Problem 15 ‎ (Created page with "Suppose that <math>a</math> and <math>b</math> are integers such that <math>x^2-x-1</math> is a factor of <math>ax^3+bx^2+1</math>. What is <math>b</math>?")
• 22:34, 18 February 2012 (diff | hist) . . (+74)‎ . . N 1993 AHSME Problems/Problem 28 ‎ (Created page with "How many triangles can be formed with vertices on a 4 by 4 grid of points?")
• 22:28, 18 February 2012 (diff | hist) . . (+217)‎ . . N 1992 AHSME Problems/Problem 23 ‎ (Created page with "Let <math>S</math> be a subset of <math>\{1,2,3,...,50\}</math> such that no pair of distinct elements in <math>S</math> has a sum divisible by <math>7</math>. What is the maximu...")
• 22:25, 18 February 2012 (diff | hist) . . (+229)‎ . . N 1992 AHSME Problems/Problem 17 ‎ (Created page with "The 2-digit integers from 19 to 92 are written consecutively to form the integer <math>N=192021\cdots9192</math>. Suppose that <math>3^k</math> is the highest power of 3 that is ...")
• 22:22, 18 February 2012 (diff | hist) . . (+218)‎ . . N 1991 AHSME Problems/Problem 15 ‎ (Created page with "A circular table has 60 chairs around it. There are <math>N</math> people seated at this table in such a way that the next person seated must sit next to someone. What is the sma...")
• 22:14, 18 February 2012 (diff | hist) . . (+240)‎ . . N 1991 AHSME Problems/Problem 21 ‎ (Created page with "For all real numbers <math>x</math> except <math>x=0</math> and <math>x=1</math> the function <math>f(x)</math> is defined by <math>f(x/(1-x))=1/x</math>. Suppose <math>0\leq t\l...")
• 21:58, 18 February 2012 (diff | hist) . . (+227)‎ . . N 1990 AHSME Problems/Problem 30 ‎ (Created page with "Let <math>R_n=\frac{1}{2}(a^n+b^n)</math> for each non-negative integer <math>n</math> where <math>a=3+2\sqrt{2}</math> and <math>b=3-2\sqrt{2}</math>. The value of <math>R_{1234...")
• 21:53, 18 February 2012 (diff | hist) . . (+515)‎ . . N 1991 AHSME Problems/Problem 26 ‎ (Created page with "An <math>n</math>-digit positive integer is cute if its <math>n</math> digits are an arrangement of the set <math>\{1,2,...,n\}</math> and its first <math>k</math> digits form a...")
• 21:46, 18 February 2012 (diff | hist) . . (+388)‎ . . N 1992 AHSME Problems/Problem 21 ‎ (Created page with "For a finite sequence <math>A=(a_1,a_2,...,a_n)</math> of numbers, the ''Cesáro sum'' of A is defined to be <math>\frac{S_1+\cdots+S_n}{n}</math> , where <math>S_k=a_1+\cdots+...")
• 21:35, 18 February 2012 (diff | hist) . . (+88)‎ . . N 1990 AHSME Problems/Problem 11 ‎ (Created page with "How many positive integers less than 50 have an odd number of positive integer divisors?")
• 21:32, 18 February 2012 (diff | hist) . . (+446)‎ . . N 1991 AHSME Problems/Problem 17 ‎ (Created page with "A positive integer <math>N</math> is a ''palindrome'' if the integer obtained by reversing the sequence of digits of <math>N</math> is equal to <math>N</math>. The year 1991 is t...")
• 05:03, 13 February 2012 (diff | hist) . . (+1,168)‎ . . 2012 AMC 12A Problems/Problem 18 ‎ (→‎Solution)
• 04:17, 13 February 2012 (diff | hist) . . (+726)‎ . . 2012 AMC 12A Problems/Problem 16 ‎ (→‎Solution)
• 04:32, 20 February 2011 (diff | hist) . . (+1,470)‎ . . 2011 AMC 12A Problems/Problem 24 ‎ (→‎Solution 1)
• 04:00, 20 February 2011 (diff | hist) . . (+1,397)‎ . . 2011 AMC 12A Problems/Problem 23 ‎ (→‎Solution)

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