# User contributions

- 21:11, 13 February 2012 (diff | hist) . . (-1) . . 2012 AMC 10A Problems/Problem 18 (→Solution)
- 21:11, 13 February 2012 (diff | hist) . . (+1) . . 2012 AMC 10A Problems/Problem 18 (→Solution)
- 21:56, 8 February 2012
(diff | hist) . .
**(+644)** . . N 2012 AMC 10A Problems/Problem 21 (Created page with "==Problem 21== Let points <math>A</math> = <math>(0 ,0 ,0)</math>, <math>B</math> = <math>(1, 0, 0)</math>, <math>C</math> = <math>(0, 2, 0)</math>, and <math>D</math> = <math>(...") - 21:48, 8 February 2012
(diff | hist) . .
**(+688)** . . N 2012 AMC 10A Problems/Problem 20 (Created page with "==Problem 20== A <math>3</math> x <math>3</math> square is partitioned into <math>9</math> unit squares. Each unit square is painted either white or black with each color being ...") - 21:42, 8 February 2012
(diff | hist) . .
**(+628)** . . N 2012 AMC 10A Problems/Problem 19 (Created page with "==Problem 19== Paula the painter and her two helpers each paint at constant, but different, rates. They always start at 8:00 AM, and all three always take the same amount of tim...") - 21:39, 8 February 2012 (diff | hist) . . (+318) . . N 2012 AMC 10A Problems/Problem 17 (Created page with "==Problem 17== Let <math>a</math> and <math>b</math> be relatively prime integers with <math>a>b>0</math> and <math>\frac{a^3-b^3}{(a-b)^3}</math> = <math>\frac{73}{3}</math>. W...")
- 21:35, 8 February 2012 (diff | hist) . . (+477) . . N 2012 AMC 10A Problems/Problem 16 (Created page with "==Problem 16== Three runners start running simultaneously from the same point on a 500-meter circular track. They each run clockwise around the course maintaining constant speed...")
- 21:32, 8 February 2012
(diff | hist) . .
**(+600)** . . N 2012 AMC 10A Problems/Problem 13 (Created page with "== Problem 13 == An ''iterative average'' of the numbers 1, 2, 3, 4, and 5 is computed the following way. Arrange the five numbers in some order. Find the mean of the first two ...") - 19:26, 8 February 2012 (diff | hist) . . (+17) . . 2012 AMC 10A Problems/Problem 9
- 19:25, 8 February 2012 (diff | hist) . . (+17) . . 2012 AMC 10A Problems/Problem 7
- 19:25, 8 February 2012 (diff | hist) . . (+17) . . 2012 AMC 10A Problems/Problem 6
- 19:25, 8 February 2012 (diff | hist) . . (+17) . . 2012 AMC 10A Problems/Problem 5
- 19:24, 8 February 2012 (diff | hist) . . (+19) . . 2012 AMC 10A Problems/Problem 11
- 19:20, 8 February 2012 (diff | hist) . . (+311) . . N 2012 AMC 10A Problems/Problem 11 (Created page with "Externally tangent circles with centers at points A and B have radii of lengths 5 and 3, respectively. A line externally tangent to both circles intersects ray AB at point C. Wha...")
- 19:16, 8 February 2012 (diff | hist) . . (+447) . . N 2012 AMC 10A Problems/Problem 9 (Created page with "A pair of six-sided dice are labeled so that one die has only even numbers (two each of 2, 4, and 6), and the other die has only odd numbers (two of each 1, 3, and 5). The pair o...")
- 19:13, 8 February 2012 (diff | hist) . . (+386) . . N 2012 AMC 10A Problems/Problem 7 (Created page with "In a bag of marbles, <math>\frac{3}{5}</math> of the marbles are blue and the rest are red. If the number of red marbles is doubled and the number of blue marbles stays the same,...")
- 19:11, 8 February 2012 (diff | hist) . . (+312) . . N 2012 AMC 10A Problems/Problem 6 (Created page with "The product of two positive numbers is 9. The reciprocal of one of these numbers is 4 times the reciprocal of the other number. What is the sum of the two numbers? <math> \textb...")
- 19:08, 8 February 2012 (diff | hist) . . (+85) . . 2012 AMC 10A Problems/Problem 5
- 19:07, 8 February 2012 (diff | hist) . . (+341) . . N 2012 AMC 10A Problems/Problem 5 (Created page with "Last year 100 adult cats, half of whom were female, were brought into the Smallville Animal Shelter. Half of the adult female cats were accompanied by a litter of kittens. The av...")