User contributions
- 09:26, 12 May 2013 (diff | hist) . . (+27) . . 2013 USAJMO Problems/Problem 5
- 20:32, 11 May 2013 (diff | hist) . . (+1) . . 2013 USAMO (→Problem 5)
- 20:30, 11 May 2013 (diff | hist) . . (+1) . . 2013 USAJMO Problems/Problem 1
- 20:30, 11 May 2013 (diff | hist) . . (+72) . . 2013 USAJMO Problems/Problem 1
- 20:29, 11 May 2013 (diff | hist) . . (+1,367) . . 2013 USAJMO Problems/Problem 2
- 20:19, 11 May 2013 (diff | hist) . . (+3,365) . . 2013 USAMO Problems/Problem 1
- 20:04, 11 May 2013 (diff | hist) . . (+1,428) . . 2013 USAJMO Problems/Problem 4
- 19:55, 11 May 2013 (diff | hist) . . (+443) . . 2013 USAJMO Problems/Problem 4
- 15:40, 22 February 2013 (diff | hist) . . (-2) . . 2013 AMC 10B Problems/Problem 24
- 20:10, 21 February 2013 (diff | hist) . . (+4) . . 2013 AMC 10B Problems/Problem 15
- 20:08, 21 February 2013 (diff | hist) . . (+312) . . 2013 AMC 10B Problems/Problem 15
- 19:55, 21 February 2013 (diff | hist) . . (+478) . . 2013 AMC 10B Problems/Problem 13
- 17:24, 21 February 2013 (diff | hist) . . (+346) . . 2013 AMC 10B Problems/Problem 4
- 15:55, 21 February 2013 (diff | hist) . . (+1,151) . . N 2013 AMC 10B Problems/Problem 21 (Created page with "==Problem== Two non-decreasing sequences of nonnegative integers have different first terms. Each sequence has the property that each term beginning with the third is the sum o...")
- 15:50, 21 February 2013 (diff | hist) . . (+1,368) . . 2013 AMC 10B Problems/Problem 22
- 15:44, 21 February 2013 (diff | hist) . . (+662) . . N 2013 AMC 10B Problems/Problem 11 (Created page with "==Problem== Real numbers <math>x</math> and <math>y</math> satisfy the equation <math>x^2 + y^2 = 10x - 6y - 34</math>. What is <math>x+y</math>? <math> \textbf{(A)}\ 1 \qquad...")
- 13:45, 21 February 2013 (diff | hist) . . (+837) . . N 2013 AMC 10B Problems/Problem 2 (Created page with "==Problem== Mr. Green measures his rectangular garden by walking two of the sides and finding that it is <math>15</math> steps by <math>20</math> steps. Each of Mr. Green's st...")
- 13:41, 21 February 2013 (diff | hist) . . (+399) . . N 2013 AMC 10B Problems/Problem 1 (Created page with "==Problem== What is <math>\frac{2+4+6}{1+3+5} - \frac{1+3+5}{2+4+6}</math>? <math> \textbf{(A)}\ -1 \qquad\textbf{(B)}\ \frac{5}{36} \qquad\textbf{(C)}\ \frac{7}{12} \qquad\te...")
- 23:12, 9 February 2013 (diff | hist) . . (+76) . . 2013 AMC 10A Problems/Problem 23
- 23:09, 9 February 2013 (diff | hist) . . (-87) . . 2013 AMC 10A Problems/Problem 15
- 23:09, 9 February 2013 (diff | hist) . . (+58) . . 2013 AMC 10A Problems/Problem 15
- 12:12, 9 February 2013 (diff | hist) . . (-2) . . 2013 AMC 10A Problems/Problem 23
- 12:11, 9 February 2013 (diff | hist) . . (-32) . . 2013 AMC 10A Problems/Problem 23
- 20:30, 8 February 2013 (diff | hist) . . (+761) . . 2013 AMC 10A Problems/Problem 25
- 20:22, 8 February 2013 (diff | hist) . . (+459) . . 2013 AMC 10A Problems/Problem 20
- 19:11, 8 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 20
- 19:10, 8 February 2013 (diff | hist) . . (+1) . . 2013 AMC 10A Problems/Problem 20
- 19:10, 8 February 2013 (diff | hist) . . (-1) . . 2013 AMC 10A Problems/Problem 20
- 19:08, 8 February 2013 (diff | hist) . . (+481) . . 2013 AMC 10A Problems/Problem 20
- 17:05, 8 February 2013 (diff | hist) . . (+3) . . 2013 AMC 10A Problems/Problem 25
- 17:05, 8 February 2013 (diff | hist) . . (-1) . . 2013 AMC 10A Problems/Problem 25 (→Solution)
- 15:31, 8 February 2013 (diff | hist) . . (+8) . . 2013 AMC 10A Problems/Problem 25
- 15:31, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 24
- 15:31, 8 February 2013 (diff | hist) . . (+9) . . 2013 AMC 10A Problems/Problem 23
- 15:30, 8 February 2013 (diff | hist) . . (+10) . . 2013 AMC 10A Problems/Problem 22
- 15:30, 8 February 2013 (diff | hist) . . (-19) . . 2013 AMC 10A Problems/Problem 21
- 15:29, 8 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 18
- 15:29, 8 February 2013 (diff | hist) . . (-7) . . 2013 AMC 10A Problems/Problem 18
- 15:29, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 17
- 15:28, 8 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 16
- 15:28, 8 February 2013 (diff | hist) . . (-7) . . m 2013 AMC 10A Problems/Problem 16
- 15:28, 8 February 2013 (diff | hist) . . (+1) . . 2013 AMC 10A Problems/Problem 15
- 15:27, 8 February 2013 (diff | hist) . . (-2) . . m 2013 AMC 10A Problems/Problem 14
- 15:27, 8 February 2013 (diff | hist) . . (+2) . . 2013 AMC 10A Problems/Problem 14
- 15:27, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 14
- 15:26, 8 February 2013 (diff | hist) . . (-7) . . 2013 AMC 10A Problems/Problem 13
- 15:26, 8 February 2013 (diff | hist) . . (+21) . . 2013 AMC 10A Problems/Problem 12
- 15:26, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 11
- 15:25, 8 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 10
- 15:25, 8 February 2013 (diff | hist) . . (-7) . . 2013 AMC 10A Problems/Problem 10
- 15:24, 8 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 9
- 15:24, 8 February 2013 (diff | hist) . . (-7) . . 2013 AMC 10A Problems/Problem 9
- 15:24, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 8
- 15:23, 8 February 2013 (diff | hist) . . (-23) . . 2013 AMC 10A Problems/Problem 7
- 15:22, 8 February 2013 (diff | hist) . . (-16) . . 2013 AMC 10A Problems/Problem 6
- 15:22, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 5
- 15:21, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 4
- 15:21, 8 February 2013 (diff | hist) . . (-6) . . 2013 AMC 10A Problems/Problem 3
- 15:20, 8 February 2013 (diff | hist) . . (-7) . . 2013 AMC 10A Problems/Problem 2
- 15:19, 8 February 2013 (diff | hist) . . (+12) . . 2013 AMC 10A Problems/Problem 1
- 15:19, 8 February 2013 (diff | hist) . . (-11) . . 2013 AMC 10A Problems/Problem 1
- 15:18, 8 February 2013 (diff | hist) . . (-262) . . 2013 AMC 10A Problems/Problem 20 (→Solution)
- 15:18, 8 February 2013 (diff | hist) . . (+1,211) . . 2013 AMC 10A Problems/Problem 24
- 15:13, 8 February 2013 (diff | hist) . . (+428) . . 2013 AMC 10A Problems/Problem 24
- 15:11, 8 February 2013 (diff | hist) . . (+326) . . 2013 AMC 10A Problems/Problem 24
- 13:41, 8 February 2013 (diff | hist) . . (+709) . . 2013 AMC 10A Problems/Problem 20
- 13:17, 8 February 2013 (diff | hist) . . (+458) . . 2013 AMC 10A Problems/Problem 23
- 13:02, 8 February 2013 (diff | hist) . . (+628) . . 2013 AMC 10A Problems/Problem 18
- 11:59, 8 February 2013 (diff | hist) . . (+1,864) . . 2013 AMC 10A Problems/Problem 16
- 11:22, 8 February 2013 (diff | hist) . . (+1,207) . . 2013 AMC 10A Problems
- 23:23, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Answer Key
- 23:05, 7 February 2013 (diff | hist) . . (+1,109) . . 2013 AMC 10A Problems/Problem 21
- 22:54, 7 February 2013 (diff | hist) . . (-2) . . 2013 AMC 10A Problems/Problem 25
- 22:53, 7 February 2013 (diff | hist) . . (+811) . . 2013 AMC 10A Problems/Problem 25
- 22:46, 7 February 2013 (diff | hist) . . (+141) . . 2013 AMC 10A Problems/Problem 17
- 22:34, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 15
- 22:34, 7 February 2013 (diff | hist) . . (+1) . . 2013 AMC 10A Problems/Problem 15 (→Solution 2 (actually solving))
- 22:33, 7 February 2013 (diff | hist) . . (+752) . . 2013 AMC 10A Problems/Problem 15
- 22:24, 7 February 2013 (diff | hist) . . (+2) . . 2013 AMC 10A Problems/Problem 15 (→Solution)
- 22:22, 7 February 2013 (diff | hist) . . (+126) . . 2013 AMC 10A Problems/Problem 19
- 22:21, 7 February 2013 (diff | hist) . . (+99) . . 2013 AMC 10A Problems/Problem 25
- 22:20, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 24
- 22:19, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 20
- 22:19, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 17
- 22:18, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 16
- 22:18, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 15
- 22:17, 7 February 2013 (diff | hist) . . (+48) . . 2013 AMC 10A Problems/Problem 14
- 22:17, 7 February 2013 (diff | hist) . . (+62) . . 2013 AMC 10A Problems/Problem 13
- 22:15, 7 February 2013 (diff | hist) . . (+109) . . 2013 AMC 10A Problems/Problem 23
- 22:14, 7 February 2013 (diff | hist) . . (+109) . . 2013 AMC 10A Problems/Problem 22
- 22:13, 7 February 2013 (diff | hist) . . (+109) . . 2013 AMC 10A Problems/Problem 21
- 22:12, 7 February 2013 (diff | hist) . . (+110) . . 2013 AMC 10A Problems/Problem 18
- 22:11, 7 February 2013 (diff | hist) . . (+108) . . 2013 AMC 10A Problems/Problem 12
- 22:10, 7 February 2013 (diff | hist) . . (+1,525) . . 2013 AMC 10A Problems/Problem 12
- 22:08, 7 February 2013 (diff | hist) . . (+64) . . 2013 AMC 10A Problems/Problem 11
- 22:04, 7 February 2013 (diff | hist) . . (+108) . . 2013 AMC 10A Problems/Problem 10
- 22:03, 7 February 2013 (diff | hist) . . (+575) . . N 2013 AMC 10A Problems/Problem 22 (Created page with "==Problem== Six spheres of radius <math>1</math> are positioned so that their centers are at the vertices of a regular hexagon of side length <math>2</math>. The six spheres are...")
- 22:03, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A
- 22:03, 7 February 2013 (diff | hist) . . (-575) . . 2013 AMC 10B Problems/Problem 22 (Blanked the page)
- 22:02, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A
- 22:00, 7 February 2013 (diff | hist) . . (+45) . . 2013 AMC 10A Problems/Problem 5 (→See Also)
- 21:59, 7 February 2013 (diff | hist) . . (+106) . . 2013 AMC 10A Problems/Problem 9
- 21:58, 7 February 2013 (diff | hist) . . (+105) . . 2013 AMC 10A Problems/Problem 8
- 21:56, 7 February 2013 (diff | hist) . . (+60) . . 2013 AMC 10A Problems/Problem 7
- 21:55, 7 February 2013 (diff | hist) . . (+60) . . 2013 AMC 10A Problems/Problem 6
- 21:54, 7 February 2013 (diff | hist) . . (+60) . . 2013 AMC 10A Problems/Problem 5
- 21:53, 7 February 2013 (diff | hist) . . (+105) . . 2013 AMC 10A Problems/Problem 4
- 21:48, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A
- 21:45, 7 February 2013 (diff | hist) . . (+33) . . 2013 AMC 10A Problems/Problem 3
- 21:41, 7 February 2013 (diff | hist) . . (+61) . . 2013 AMC 10A Problems/Problem 2
- 21:39, 7 February 2013 (diff | hist) . . (0) . . 2013 AMC 10A Problems/Problem 1
- 21:38, 7 February 2013 (diff | hist) . . (+74) . . 2013 AMC 10A Problems/Problem 1
- 21:31, 7 February 2013 (diff | hist) . . (+489) . . N 2013 AMC 10A Problems/Problem 23 (Created page with "==Problem== In <math>\triangle ABC</math>, <math>AB = 86</math>, and <math>AC=97</math>. A circle with center <math>A</math> and radius <math>AB</math> intersects <math>\overli...")
- 21:29, 7 February 2013 (diff | hist) . . (+575) . . N 2013 AMC 10B Problems/Problem 22 (Created page with "==Problem== Six spheres of radius <math>1</math> are positioned so that their centers are at the vertices of a regular hexagon of side length <math>2</math>. The six spheres are...")
- 21:25, 7 February 2013 (diff | hist) . . (+625) . . N 2013 AMC 10A Problems/Problem 21 (Created page with "==Problem== A group of <math>12</math> pirates agree to divide a treasure chest of gold coins among themselves as follows. The <math>k^{\text{th}}</math> pirate to take a share...")
- 21:22, 7 February 2013 (diff | hist) . . (+437) . . Nm 2013 AMC 10A Problems/Problem 20 (Created page with "==Problem== A unit square is rotated <math>45^\circ</math> about its center. What is the area of the region swept out by the interior of the square? <math> \textbf{(A)}\ 1 ...")
- 21:20, 7 February 2013 (diff | hist) . . (+504) . . N 2013 AMC 10A Problems/Problem 19 (Created page with "==Problem== In base <math>10</math>, the number <math>2013</math> ends in the digit <math>3</math>. In base <math>9</math>, on the other hand, the same number is written as <ma...")
- 21:15, 7 February 2013 (diff | hist) . . (+539) . . N 2013 AMC 10A Problems/Problem 18 (Created page with "==Problem== Let points <math>A = (0, 0)</math>, <math>B = (1, 2)</math>, <math>C=(3, 3)</math>, and <math>D = (4, 0)</math>. Quadrilateral <math>ABCD</math> is cut into equal a...")
- 20:56, 7 February 2013 (diff | hist) . . (+455) . . N 2013 AMC 10A Problems/Problem 17 (Created page with "==Problem== Daphne is visited periodically by her three best friends: Alice, Beatrix, and Claire. Alice visits every third day, Beatrix visits every fourth day, and Claire visi...")
- 20:51, 7 February 2013 (diff | hist) . . (+13) . . 2013 AMC 10A Problems/Problem 16
- 20:51, 7 February 2013 (diff | hist) . . (+386) . . N 2013 AMC 10A Problems/Problem 16 (Created page with "==Problem== A triangle with vertices <math>(6, 5)</math>, <math>(8, -3)</math>, and <math>(9, 1) is reflected about the line </math>x=8<math> to create a second triangle. What ...")
- 20:49, 7 February 2013 (diff | hist) . . (+1) . . 2013 AMC 10A Problems/Problem 15
- 20:49, 7 February 2013 (diff | hist) . . (+41) . . 2013 AMC 10A Problems/Problem 9
- 20:48, 7 February 2013 (diff | hist) . . (+26) . . 2013 AMC 10A Problems/Problem 15
- 20:48, 7 February 2013 (diff | hist) . . (+315) . . 2013 AMC 10A Problems/Problem 15
- 20:45, 7 February 2013 (diff | hist) . . (+26) . . N 2013 AMC 10A Problems/Problem 15 (Created page with "==Problem== ==Solution==")
- 20:44, 7 February 2013 (diff | hist) . . (+27) . . N 2013 AMC 10A Problems/Problem 12 (Created page with "==Problem== ==Solution==")
- 20:39, 7 February 2013 (diff | hist) . . (+1,363) . . N 2013 AMC 10A Problems/Problem 13 (Created page with "==Problem== How many three-digit numbers are not divisible by <math>5</math>, have digits that sum to less than <math>20</math>, and have the first digit equal to the third digi...")
- 20:27, 7 February 2013 (diff | hist) . . (+895) . . N 2013 AMC 10A Problems/Problem 10 (Created page with "==Problem== A flower bouquet contains pink roses, red roses, pink carnations, and red carnations. One third of the pink flowers are roses, three fourths of the red flowers are ...")
- 20:10, 7 February 2013 (diff | hist) . . (+961) . . N 2013 AMC 10A Problems/Problem 9 (Created page with "==Problem== In a recent basketball game, Shenille attempted only three-point shots and two-point shots. She was successful on 20% of her three-point shots and 30% of her two-po...")
- 19:58, 7 February 2013 (diff | hist) . . (+1) . . 2013 AMC 10A Problems/Problem 11
- 19:57, 7 February 2013 (diff | hist) . . (+2) . . 2013 AMC 10A Problems/Problem 8
- 19:57, 7 February 2013 (diff | hist) . . (+494) . . 2013 AMC 10A Problems/Problem 8
- 19:46, 7 February 2013 (diff | hist) . . (+149) . . 2013 AMC 10A Problems/Problem 6
- 19:45, 7 February 2013 (diff | hist) . . (+2) . . 2013 AMC 10A Problems/Problem 5
- 19:44, 7 February 2013 (diff | hist) . . (+493) . . 2013 AMC 10A Problems/Problem 2 (Wrote the solution, finished it.)
- 19:40, 7 February 2013 (diff | hist) . . (+42) . . 2013 AMC 10A Problems/Problem 1
- 19:34, 7 February 2013 (diff | hist) . . (+29) . . 2013 AMC 10A Problems/Problem 4
- 19:27, 7 February 2013 (diff | hist) . . (+27) . . 2013 AMC 10A Problems/Problem 3
- 19:25, 7 February 2013 (diff | hist) . . (+27) . . 2013 AMC 10A Problems/Problem 11
- 19:24, 7 February 2013 (diff | hist) . . (+27) . . 2013 AMC 10A Problems/Problem 7
- 19:22, 7 February 2013 (diff | hist) . . (+26) . . 2013 AMC 10A Problems/Problem 5
- 19:18, 7 February 2013 (diff | hist) . . (+425) . . 2013 AMC 10A Problems/Problem 11
- 18:53, 7 February 2013 (diff | hist) . . (-5) . . 2013 AMC 10A Problems/Problem 1
- 18:49, 7 February 2013 (diff | hist) . . (+229) . . 2013 AMC 10A Problems/Problem 3
- 17:08, 7 February 2013 (diff | hist) . . (+39) . . 2013 AMC 10A Problems/Problem 6
- 17:05, 7 February 2013 (diff | hist) . . (+302) . . 2013 AMC 10A Problems/Problem 6
- 16:55, 7 February 2013 (diff | hist) . . (+449) . . 2013 AMC 10A Problems/Problem 14
- 16:34, 7 February 2013 (diff | hist) . . (+116) . . 2013 AMC 10A Problems/Problem 7
- 16:33, 7 February 2013 (diff | hist) . . (+754) . . 2013 AMC 10A Problems/Problem 7
- 16:27, 7 February 2013 (diff | hist) . . (+45) . . 2013 AMC 10A Problems/Problem 4
- 16:26, 7 February 2013 (diff | hist) . . (+290) . . 2013 AMC 10A Problems/Problem 5
- 16:21, 7 February 2013 (diff | hist) . . (+643) . . 2013 AMC 10A Problems/Problem 4