7 February 2014

• 19:5119:51, 7 February 2014 diff hist +642 2014 AMC 10A Problems/Problem 25 →Solution
• 19:4619:46, 7 February 2014 diff hist +4 m 2014 AMC 12A Problems/Problem 7 →Solution
• 19:4119:41, 7 February 2014 diff hist +923 2014 AMC 12A Problems/Problem 17 →Problem
• 19:3919:39, 7 February 2014 diff hist −14 2014 AMC 12A Problems/Problem 25 →Solution
• 19:3819:38, 7 February 2014 diff hist +1,502 N 2014 AMC 12A Problems/Problem 25 Created page with "==Problem== The parabola <math>P</math> has focus <math>(0,0)</math> and goes through the points <math>(4,3)</math> and <math>(-4,-3)</math>. For how many points <math>(x,y)\in..."
• 19:3519:35, 7 February 2014 diff hist +1,257 N 2014 AMC 12A Problems/Problem 15 Created page with "==Problem== A five-digit palindrome is a positive integer with respective digits <math>abcba</math>, where <math>a</math> is non-zero. Let <math>S</math> be the sum of all five..."
• 19:3319:33, 7 February 2014 diff hist +27 2014 AMC 12A Problems/Problem 13 →Solution
• 19:3319:33, 7 February 2014 diff hist +853 N 2014 AMC 12A Problems/Problem 14 Created page with "==Problem== Let <math>a<b<c</math> be three integers such that <math>a,b,c</math> is an arithmetic progression and <math>a,c,b</math> is a geometric progression. What is the sm..."
• 19:2919:29, 7 February 2014 diff hist +505 2014 AMC 12A Problems/Problem 13 →Problem
• 19:2919:29, 7 February 2014 diff hist 0 2014 AMC 12A Problems/Problem 13 →Solution
• 19:2919:29, 7 February 2014 diff hist 0 2014 AMC 12A Problems/Problem 13 →Solution
• 19:2819:28, 7 February 2014 diff hist +20 2014 AMC 12A Problems/Problem 13 →Solution
• 19:2819:28, 7 February 2014 diff hist −21 2014 AMC 12A Problems/Problem 13 →Solution
• 19:2719:27, 7 February 2014 diff hist +1,281 N 2014 AMC 12A Problems/Problem 13 Created page with "==Problem== ==Solution== We can discern three cases. [b]Case 1: Each room houses one guest.[/b] In this case, we have <math>5</math> guests to choose for the first room, <ma..."
• 19:2619:26, 7 February 2014 diff hist +5 2014 AMC 12A Problems/Problem 12 →Solution
• 19:2519:25, 7 February 2014 diff hist +3 2014 AMC 12A Problems/Problem 12 →Solution
• 19:2419:24, 7 February 2014 diff hist +1,446 N 2014 AMC 12A Problems/Problem 12 Created page with "==Problem== Two circles intersect at points <math>A</math> and <math>B</math>. The minor arcs <math>AB</math> measure <math>30^\circ</math> on one circle and <math>60^\circ</ma..."
• 19:2119:21, 7 February 2014 diff hist +25 2014 AMC 12A Problems/Problem 10 →Solution
• 19:2119:21, 7 February 2014 diff hist +942 N 2014 AMC 12A Problems/Problem 10 Created page with "==Problem== Three congruent isosceles triangles are constructed with their bases on the sides of an equilateral triangle of side length <math>1</math>. The sum of the areas of ..."
• 18:3518:35, 7 February 2014 diff hist +27 2014 AMC 12A Problems/Problem 4 →Solution
• 18:3518:35, 7 February 2014 diff hist +641 N 2014 AMC 12A Problems/Problem 4 Created page with "==Problem== Suppose that <math>a</math> cows give <math>b</math> gallons of milk in <math>c</math> days. At this rate, how many gallons of milk will <math>d</math> cows give in ..."
• 18:3218:32, 7 February 2014 diff hist +573 2014 AMC 12A Problems/Problem 3 →Problem
• 18:3118:31, 7 February 2014 diff hist +428 N 2014 AMC 12A Problems/Problem 3 Created page with "==Problem== Walking down Jane Street, Ralph passed four houses in a row, each painted a different color. He passed the orange house before the red house, and he passed the blue ..."