User contributions
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- 02:00, 5 February 2015 (diff | hist) . . (+1,117) . . N 2015 AMC 12A Problems/Problem 25 (Created page with "==Problem== A collection of circles in the upper half-plane, all tangent to the <math>x</math>-axis, is constructed in layers as follows. Layer <math>L_0</math> consists of two ...")
- 01:59, 5 February 2015 (diff | hist) . . (+394) . . 2015 AMC 12A Problems/Problem 24
- 01:58, 5 February 2015 (diff | hist) . . (+774) . . 2015 AMC 12A Problems/Problem 23
- 01:55, 5 February 2015 (diff | hist) . . (+63) . . 2015 AMC 12A Problems/Problem 22
- 01:54, 5 February 2015 (diff | hist) . . (+80) . . 2015 AMC 12A Problems/Problem 20
- 01:53, 5 February 2015 (diff | hist) . . (+354) . . 2015 AMC 12A Problems/Problem 18
- 01:51, 5 February 2015 (diff | hist) . . (+60) . . 2015 AMC 12A Problems/Problem 15
- 01:50, 5 February 2015 (diff | hist) . . (+60) . . 2015 AMC 12A Problems/Problem 14
- 01:50, 5 February 2015 (diff | hist) . . (+60) . . 2015 AMC 12A Problems/Problem 13
- 01:49, 5 February 2015 (diff | hist) . . (+60) . . 2015 AMC 12A Problems/Problem 12
- 01:48, 5 February 2015 (diff | hist) . . (+1) . . 2015 AMC 12A Problems (→Problem 11)
- 21:47, 4 February 2015 (diff | hist) . . (+822) . . N 2015 AMC 12A Problems/Problem 11 (Created page with "==Problem== On a sheet of paper, Isabella draws a circle of radius <math>2</math>, a circle of radius <math>3</math>, and all possible lines simultaneously tangent to both circl...")
- 21:44, 4 February 2015 (diff | hist) . . (+707) . . N 2015 AMC 12A Problems/Problem 10 (Created page with "==Problem== Integers <math>x</math> and <math>y</math> with <math>x>y>0</math> satisfy <math>x+y+xy=80</math>. What is <math>x</math>? <math> \textbf{(A)}\ 8 \qquad\textbf{(B)}...")
- 21:36, 4 February 2015 (diff | hist) . . (+528) . . N 2015 AMC 12A Problems/Problem 9 (Created page with "==Problem== A box contains 2 red marbles, 2 green marbles, and 2 yellow marbles. Carol takes 2 marbles from the box at random; then Claudia takes 2 of the remaining marbles at r...")
- 21:35, 4 February 2015 (diff | hist) . . (0) . . 2015 AMC 12A Problems/Problem 5 (→See Also)
- 21:35, 4 February 2015 (diff | hist) . . (+1,226) . . N 2015 AMC 12A Problems/Problem 5 (Created page with "==Problem== Amelia needs to estimate the quantity <math>\frac{a}{b} - c</math>, where <math>a, b,</math> and <math>c</math> are large positive integers. She rounds each of the i...")
- 21:31, 4 February 2015 (diff | hist) . . (+61) . . 2015 AMC 12A Problems/Problem 2
- 21:31, 4 February 2015 (diff | hist) . . (+6,178) . . 2015 AMC 12A Problems
- 21:10, 4 February 2015 (diff | hist) . . (+5,600) . . 2015 AMC 12A Problems
- 20:54, 4 February 2015 (diff | hist) . . (+208) . . 2015 AMC 10A Problems/Problem 24
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