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

• 04:09, 25 February 2022 (diff | hist) . . (+26)‎ . . m 2021 Fall AMC 12B Problems/Problem 16 ‎ (→‎Solution 2 (Enumeration))
• 04:09, 25 February 2022 (diff | hist) . . (-18)‎ . . m 2021 Fall AMC 12B Problems/Problem 16 ‎ (Prioritized the solution on observation.)
• 04:03, 25 February 2022 (diff | hist) . . (0)‎ . . m 2021 Fall AMC 12B Problems ‎ (→‎Problem 16)
• 03:54, 25 February 2022 (diff | hist) . . (-3)‎ . . m 2021 Fall AMC 12B Problems/Problem 14 ‎
• 03:51, 25 February 2022 (diff | hist) . . (-7)‎ . . 2021 Fall AMC 12B Problems/Problem 14 ‎ (Made the solution more concise and generalized.)
• 03:37, 25 February 2022 (diff | hist) . . (-8)‎ . . m 2020 AMC 10A Problems/Problem 17 ‎ (→‎Solution 1 (Casework): Changed cdots to vdots.)
• 03:32, 25 February 2022 (diff | hist) . . (-874)‎ . . 2020 AMC 10A Problems/Problem 17 ‎ (Sorry to undo all the changes, but I found Sol 4 and Sol 1 to be very similar. I wish to keep the page clean ...)
• 19:35, 24 February 2022 (diff | hist) . . (+133)‎ . . m 2021 Fall AMC 12B Problems/Problem 15 ‎
• 19:32, 24 February 2022 (diff | hist) . . (+12)‎ . . m 2021 Fall AMC 12B Problems/Problem 8 ‎ (→‎Solution 2)
• 19:32, 24 February 2022 (diff | hist) . . (+13)‎ . . m 2021 Fall AMC 12B Problems/Problem 7 ‎ (→‎Video Solution by Interstigation)
• 02:56, 24 February 2022 (diff | hist) . . (0)‎ . . m 2021 AMC 12A Problems/Problem 21 ‎ (Undo revision 171946 by Bluesoul (talk) Although the current version is also correct, the idea of eccentricity sqrt((r^s-s^2)/r^2) is better communicated in the older version.) (Tag: Undo)
• 20:02, 23 February 2022 (diff | hist) . . (+1,318)‎ . . m 1992 AIME Problems/Problem 1 ‎ (Undo vandalism) (current)
• 19:46, 23 February 2022 (diff | hist) . . (-6)‎ . . m 2022 AIME I Problems/Problem 9 ‎ (→‎Solution)
• 19:45, 23 February 2022 (diff | hist) . . (0)‎ . . m 2022 AIME I Problems/Problem 9 ‎ (→‎Solution)
• 19:45, 23 February 2022 (diff | hist) . . (-3)‎ . . m 2022 AIME I Problems/Problem 9 ‎ (→‎Solution 1)
• 19:43, 23 February 2022 (diff | hist) . . (-28)‎ . . m 2022 AIME I Problems/Problem 9 ‎ (→‎Problem)
• 19:42, 23 February 2022 (diff | hist) . . (-1)‎ . . m 2021 Fall AMC 12B ‎ (Undo revision 171936 by Inventivedant (talk) According to the official MAA site https://www.maa.org/math-competitions/amc-1012#:~:text=Students%20in%20grade%2012%20or,Tuesday%2C%20Novembe) (Tag: Undo)
• 05:41, 23 February 2022 (diff | hist) . . (-65)‎ . . 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry): Made the diagram with exact numbers rather than decimal approximations.)
• 21:52, 22 February 2022 (diff | hist) . . (+1,854)‎ . . 1991 AIME Problems/Problem 7 ‎ (Undo revision 171902 by Idontlikereggins (talk) Undoes vandalism) (Tag: Undo)
• 19:53, 22 February 2022 (diff | hist) . . (-4)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:52, 22 February 2022 (diff | hist) . . (+4)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:50, 22 February 2022 (diff | hist) . . (+8)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:44, 22 February 2022 (diff | hist) . . (+16)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:36, 22 February 2022 (diff | hist) . . (+102)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:25, 22 February 2022 (diff | hist) . . (+20)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidean Geometry))
• 19:16, 22 February 2022 (diff | hist) . . (0)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2 (Euclidian Geometry))
• 19:13, 22 February 2022 (diff | hist) . . (+22)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 1: Titled.)
• 16:18, 22 February 2022 (diff | hist) . . (+190)‎ . . 2022 AIME II Answer Key ‎
• 05:08, 22 February 2022 (diff | hist) . . (0)‎ . . m 2022 AIME I Problems/Problem 5 ‎ (→‎Solution 1)
• 00:14, 22 February 2022 (diff | hist) . . (0)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution)
• 00:09, 22 February 2022 (diff | hist) . . (+80)‎ . . m 2021 Fall AMC 12A Problems/Problem 18 ‎ (→‎Solution 1 (Multinomial Coefficients))
• 18:38, 21 February 2022 (diff | hist) . . (0)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution)
• 18:37, 21 February 2022 (diff | hist) . . (+6)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 1)
• 18:33, 21 February 2022 (diff | hist) . . (-1,735)‎ . . 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 2: Tried my very best making this solution more rigorous, but I realized that there are many more cases for the denominator: 5*7*9, 5*8*9, 6*7*9, 6*8*9, 6*7*8, 7*8*9. So, I decide to remove this sol and combine credits in Sol 1.)
• 18:13, 21 February 2022 (diff | hist) . . (+143)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 2)
• 17:51, 21 February 2022 (diff | hist) . . (+14)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 2)
• 05:44, 21 February 2022 (diff | hist) . . (+78)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution)
• 05:35, 21 February 2022 (diff | hist) . . (-1)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution)
• 05:34, 21 February 2022 (diff | hist) . . (+72)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution: Made the diagram nicer.)
• 05:11, 21 February 2022 (diff | hist) . . (-2)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 1)
• 05:11, 21 February 2022 (diff | hist) . . (-661)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 2: Sorry for deleting repetitive solutions. This solution employs the same techniques as Sol 1, but the calculations are a bit complicated.)
• 05:06, 21 February 2022 (diff | hist) . . (+27)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Solution 1)
• 05:01, 21 February 2022 (diff | hist) . . (+16)‎ . . m 2022 AIME I Problems/Problem 8 ‎ (→‎Diagram)
• 04:49, 21 February 2022 (diff | hist) . . (-10)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 2)
• 04:15, 21 February 2022 (diff | hist) . . (+7)‎ . . m 2022 AMC 8 Problems/Problem 25 ‎ (→‎Solution 4 (Dynamic Programming))
• 04:12, 21 February 2022 (diff | hist) . . (+226)‎ . . 2022 AMC 8 Problems/Problem 25 ‎ (→‎Solution 4 (Dynamic Programming): Reformatted)
• 03:41, 21 February 2022 (diff | hist) . . (+1)‎ . . m 2022 AMC 8 Problems/Problem 25 ‎ (→‎Remark)
• 03:29, 21 February 2022 (diff | hist) . . (+22)‎ . . 1985 AIME Problems/Problem 12 ‎ (→‎Solution 5 (Dynamic Programming): Reformatted.)
• 03:17, 21 February 2022 (diff | hist) . . (-10)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 1)
• 01:37, 21 February 2022 (diff | hist) . . (-6)‎ . . m 2022 AIME I Problems/Problem 7 ‎ (→‎Solution 1)

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