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- 20:26, 6 March 2009 (diff | hist) . . (+2,102) . . 2009 AMC 10B Problems/Problem 13
- 18:16, 3 March 2009 (diff | hist) . . (+13) . . m 2009 AMC 10B Problems (→Problem 18)
- 17:30, 3 March 2009 (diff | hist) . . (+781) . . N 2009 AMC 10B Problems/Problem 11 (New page: == Problem == How many <math>7</math>-digit palindromes (numbers that read the same backward as forward) can be formed using the digits <math>2</math>, <math>2</math>, <math>3</math>, <ma...)
- 17:23, 3 March 2009 (diff | hist) . . (+868) . . N 2009 AMC 10B Problems/Problem 10 (New page: == Problem == A flagpole is originally <math>5</math> meters tall. A hurricane snaps the flagpole at a point <math>x</math> meters above the ground so that the upper part, still attached ...)
- 17:06, 3 March 2009 (diff | hist) . . (+1,413) . . N 2009 AMC 10B Problems/Problem 9 (New page: == Problem == Segment <math>BD</math> and <math>AE</math> intersect at <math>C</math>, as shown, <math>AB=BC=CD=CE</math>, and <math>\angle A = \frac 52 \angle B</math>. What is the degre...)
- 14:39, 3 March 2009 (diff | hist) . . (+734) . . N 2009 AMC 10B Problems/Problem 2 (New page: == Problem == Which of the following is equal to <math>\dfrac{\frac{1}{3}-\frac{1}{4}}{\frac{1}{2}-\frac{1}{3}}</math>? <math> \text{(A) } \frac 14 \qquad \text{(B) } \frac 13 \qquad \te...)
- 09:11, 3 March 2009 (diff | hist) . . (+14,588) . . N 2009 AMC 10B Problems (New page: == Problem 1 == Each morning of her five-day workweek, Jane bought either a 50-cent muffin or a 75-cent bagel. Her total cost for the week was a whole number of dollars, How many bagels...)
- 22:05, 2 March 2009 (diff | hist) . . (+2,953) . . N 2009 AMC 12B Problems/Problem 24 (New page: == Problem == For how many values of <math>x</math> in <math>[0,\pi]</math> is <math>\sin^{ - 1}(\sin 6x) = \cos^{ - 1}(\cos x)</math>? Note: The functions <math>\sin^{ - 1} = \arcsin</mat...)
- 20:51, 2 March 2009 (diff | hist) . . (+496) . . 2009 AMC 12B Problems/Problem 19
- 20:40, 2 March 2009 (diff | hist) . . (+972) . . 2009 AMC 10B Problems/Problem 15
- 17:03, 2 March 2009 (diff | hist) . . (+599) . . 2009 AMC 12B Problems/Problem 9 (→Solution 2)
- 10:27, 2 March 2009 (diff | hist) . . (+5,785) . . N 2009 AMC 12B Problems/Problem 25 (New page: == Problem == The set <math>G</math> is defined by the points <math>(x,y)</math> with integer coordinates, <math>3\le|x|\le7</math>, <math>3\le|y|\le7</math>. How many squares of side at l...)
- 19:24, 1 March 2009 (diff | hist) . . (-25) . . m 2009 AMC 12B Problems/Problem 19
- 19:23, 1 March 2009 (diff | hist) . . (+3,004) . . N 2009 AMC 12B Problems/Problem 19 (New page: == Problem == For each positive integer <math>n</math>, let <math>f(n) = n^4 - 360n^2 + 400</math>. What is the sum of all values of <math>f(n)</math> that are prime numbers? <math>\textb...)
- 18:28, 1 March 2009 (diff | hist) . . (+1,629) . . N 2009 AMC 12B Problems/Problem 15 (New page: == Problem == Assume <math>0 < r < 3</math>. Below are five equations for <math>x</math>. Which equation has the largest solution <math>x</math>? <math>\textbf{(A)}\ 3(1 + r)^x = 7\qqua...)
- 18:09, 1 March 2009 (diff | hist) . . (+1,528) . . N 2009 AMC 12B Problems/Problem 14 (New page: == Problem == Five unit squares are arranged in the coordinate plane as shown, with the lower left corner at the origin. The slanted line, extending from <math>(a,0)</math> to <math>(3,3)<...)
- 15:00, 1 March 2009 (diff | hist) . . (+2,227) . . 2007 AMC 10A Problems/Problem 18
- 15:38, 27 February 2009 (diff | hist) . . (+2,900) . . N 2009 AMC 12B Problems/Problem 23 (New page: == Problem == A region <math>S</math> in the complex plane is defined by <cmath> S = \{x + iy: - 1\le x\le1, - 1\le y\le1\}. </cmath> A complex number <math>z = x + iy</math> is chosen uni...)
- 10:10, 27 February 2009 (diff | hist) . . (+2,577) . . N 2009 AMC 12B Problems/Problem 22 (New page: == Problem == Parallelogram <math>ABCD</math> has area <math>1,\!000,\!000</math>. Vertex <math>A</math> is at <math>(0,0)</math> and all other vertices are in the first quadrant. Vertices...)
- 09:43, 27 February 2009 (diff | hist) . . (0) . . m 2009 AMC 12B Problems/Problem 21
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