(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)

• 19:26, 6 March 2009 (diff | hist) . . (+2,102)‎ . . 2009 AMC 10B Problems/Problem 13 ‎
• 17:16, 3 March 2009 (diff | hist) . . (+13)‎ . . m 2009 AMC 10B Problems ‎ (→‎Problem 18)
• 16:30, 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...)
• 16:23, 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 ...)
• 16:06, 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...)
• 13:39, 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...)
• 08:11, 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...)
• 21:05, 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...)
• 19:51, 2 March 2009 (diff | hist) . . (+496)‎ . . 2009 AMC 12B Problems/Problem 19 ‎
• 19:40, 2 March 2009 (diff | hist) . . (+972)‎ . . 2009 AMC 10B Problems/Problem 15 ‎
• 16:03, 2 March 2009 (diff | hist) . . (+599)‎ . . 2009 AMC 12B Problems/Problem 9 ‎ (→‎Solution 2)
• 09:27, 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...)
• 18:24, 1 March 2009 (diff | hist) . . (-25)‎ . . m 2009 AMC 12B Problems/Problem 19 ‎
• 18:23, 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...)
• 17:28, 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...)
• 17:09, 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)<...)
• 14:00, 1 March 2009 (diff | hist) . . (+2,227)‎ . . 2007 AMC 10A Problems/Problem 18 ‎
• 14:38, 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...)
• 09:10, 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...)
• 08:43, 27 February 2009 (diff | hist) . . (0)‎ . . m 2009 AMC 12B Problems/Problem 21 ‎
• 08:42, 27 February 2009 (diff | hist) . . (+1,713)‎ . . N 2009 AMC 12B Problems/Problem 21 ‎ (New page: == Problem == Ten women sit in <math>10</math> seats in a line. All of the <math>10</math> get up and then reseat themselves using all <math>10</math> seats, each sitting in the seat she w...)
• 11:57, 25 February 2009 (diff | hist) . . (+213)‎ . . 2009 AMC 10A Problems/Problem 21 ‎ (fixed a bug in the solution)
• 10:12, 20 February 2009 (diff | hist) . . (+3,560)‎ . . N 2002 AMC 12A Problems/Problem 18 ‎ (New page: == Problem == Let <math>C_1</math> and <math>C_2</math> be circles defined by <math>(x-10)^2 + y^2 = 36</math> and <math>(x+15)^2 + y^2 = 81</math> respectively. What is the length of the ...)
• 07:30, 20 February 2009 (diff | hist) . . (+1,676)‎ . . N 2002 AMC 12A Problems/Problem 21 ‎ (New page: == Problem == Consider the sequence of numbers: <math>4,7,1,8,9,7,6,\dots</math> For <math>n>2</math>, the <math>n</math>-th term of the sequence is the units digit of the sum of the two ...)
• 07:16, 20 February 2009 (diff | hist) . . (+2,085)‎ . . N 2002 AMC 12A Problems/Problem 19 ‎ (New page: == Problem == The graph of the function <math>f</math> is shown below. How many solutions does the equation <math>f(f(x))=6</math> have? <asy> size(300,300); defaultpen(fontsize(10pt)+l...)
• 07:05, 20 February 2009 (diff | hist) . . (+1,226)‎ . . N 2002 AMC 12A Problems/Problem 20 ‎ (New page: == Problem == Suppose that <math>a</math> and <math>b</math> are digits, not both nine and not both zero, and the repeating decimal <math>0.\overline{ab}</math> is expressed as a fraction...)
• 17:51, 18 February 2009 (diff | hist) . . (+782)‎ . . N 2002 AMC 12A Problems/Problem 17 ‎ (New page: == Problem == Several sets of prime numbers, such as <math>\{7,83,421,659\}</math> use each of the nine nonzero digits exactly once. What is the smallest possible sum such a set of primes...)
• 17:46, 18 February 2009 (diff | hist) . . (+1,131)‎ . . N 2002 AMC 12A Problems/Problem 24 ‎ (New page: == Problem == Find the number of ordered pairs of real numbers <math>(a,b)</math> such that <math>(a+bi)^{2002} = a-bi</math>. <math> \text{(A) }1001 \qquad \text{(B) }1002 \qquad \text{...)
• 17:41, 18 February 2009 (diff | hist) . . (+1,853)‎ . . 2002 AMC 12A Problems ‎
• 17:33, 18 February 2009 (diff | hist) . . (+1,846)‎ . . N 2002 AMC 12A Problems/Problem 16 ‎ (New page: {{duplicate|2002 AMC 12A #16 and 2002 AMC 10A #24}} ==Problem== Tina randomly selects two distinct numbers from the set {1, 2, 3, 4, 5...)
• 17:32, 18 February 2009 (diff | hist) . . (-1,616)‎ . . 2002 AMC 10A Problems/Problem 24 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 16) (current)
• 17:32, 18 February 2009 (diff | hist) . . (+268)‎ . . 2002 AMC 12A Problems ‎ (→‎Problem 16)
• 17:30, 18 February 2009 (diff | hist) . . (+622)‎ . . N 2002 AMC 12A Problems/Problem 14 ‎ (New page: == Problem == For all positive integers <math>n</math>, let <math>f(n)=\log_{2002} n^2</math>. Let <math>N=f(11)+f(13)+f(14)</math>. Which of the following relations is true? <math> \tex...)
• 17:28, 18 February 2009 (diff | hist) . . (+1,049)‎ . . N 2002 AMC 12A Problems/Problem 13 ‎ (New page: == Problem == Two different positive numbers <math>a</math> and <math>b</math> each differ from their reciprocals by <math>1</math>. What is <math>a+b</math>? <math> \text{(A) }1 \qquad ...)
• 17:15, 18 February 2009 (diff | hist) . . (+2,026)‎ . . N 2002 AMC 12A Problems/Problem 15 ‎ (New page: {{duplicate|2002 AMC 12A #15 and 2002 AMC 10A #21}} == Problem == The mean, median, unique mode, and range of a collection of eight in...)
• 17:15, 18 February 2009 (diff | hist) . . (-1,823)‎ . . 2002 AMC 10A Problems/Problem 21 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 15) (current)
• 17:13, 18 February 2009 (diff | hist) . . (+514)‎ . . 2002 AMC 12A Problems ‎
• 15:09, 18 February 2009 (diff | hist) . . (-925)‎ . . 2002 AMC 10A Problems/Problem 14 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 12) (current)
• 15:09, 18 February 2009 (diff | hist) . . (+1,283)‎ . . N 2002 AMC 12A Problems/Problem 12 ‎ (New page: {{duplicate|2002 AMC 12A #12 and 2002 AMC 10A #14}} == Problem == Both roots of the quadratic equation <math>x^2 - 63x + k = 0</math>...)
• 15:06, 18 February 2009 (diff | hist) . . (+2,416)‎ . . N 2002 AMC 12A Problems/Problem 11 ‎ (New page: {{duplicate|2002 AMC 12A #11 and 2002 AMC 10A #12}} == Problem == Mr. Earl E. Bird gets up every day at 8:00 AM to go to work. If he d...)
• 14:55, 18 February 2009 (diff | hist) . . (-1,363)‎ . . 2002 AMC 10A Problems/Problem 12 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 11) (current)
• 14:52, 18 February 2009 (diff | hist) . . (+1,343)‎ . . N 2002 AMC 12A Problems/Problem 9 ‎ (included proof of optimality)
• 14:37, 18 February 2009 (diff | hist) . . (-860)‎ . . 2002 AMC 10A Problems/Problem 11 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 9) (current)
• 14:35, 18 February 2009 (diff | hist) . . (-1,188)‎ . . 2002 AMC 10A Problems/Problem 8 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 8) (current)
• 14:35, 18 February 2009 (diff | hist) . . (+1,382)‎ . . N 2002 AMC 12A Problems/Problem 8 ‎ (New page: {{duplicate|2002 AMC 12A #8 and 2002 AMC 10A #8}} ==Problem== Betsy designed a flag using blue triangles, small white squares, and a r...)
• 14:34, 18 February 2009 (diff | hist) . . (-1,165)‎ . . 2002 AMC 10A Problems/Problem 7 ‎ (Redirecting to 2002 AMC 12A Problems/Problem 7) (current)
• 14:34, 18 February 2009 (diff | hist) . . (+1,359)‎ . . N 2002 AMC 12A Problems/Problem 7 ‎ (New page: {{duplicate|2002 AMC 12A #7 and 2002 AMC 10A #7}} ==Problem== A <math>45^\circ</math> arc of circle A is equal in length to a <math>3...)
• 14:33, 18 February 2009 (diff | hist) . . (0)‎ . . m 2002 AMC 12A Problems/Problem 10 ‎
• 14:32, 18 February 2009 (diff | hist) . . (0)‎ . . m 2002 AMC 12A Problems/Problem 6 ‎
• 14:32, 18 February 2009 (diff | hist) . . (0)‎ . . m 2002 AMC 12A Problems/Problem 3 ‎

(newest | oldest) View (newer 50 | older 50) (20 | 50 | 100 | 250 | 500)