6 November 2025

• 15:2715:27, 6 November 2025 diff hist +293 2025 AMC 12A Problems →Problem 8
• 15:2515:25, 6 November 2025 diff hist −1 2025 AMC 12A Problems →Problem 13
• 15:2015:20, 6 November 2025 diff hist −2 2025 AMC 12A Problems →Problem 8
• 15:2015:20, 6 November 2025 diff hist +185 2025 AMC 12A Problems →Problem 8
• 15:1315:13, 6 November 2025 diff hist +424 2025 AMC 12A Problems →Problem 5
• 15:1215:12, 6 November 2025 diff hist +1,258 N 2025 AMC 12A Problems/Problem 5 Created page with "==Problem 13== In the figure below, the outside square contains infinitely many squares, each of them with the same center and sides parallel to the outside square. The ratio of the side length of a square to the side length of the next inner square is <imath>k</imath>, where <imath>0 < k < 1.</imath> The spaces between squares are alternately shaded as shown in the figure (which is not necessarily drawn to scale). <asy> unitsize(1cm); int n = 25; real s..."
• 15:0715:07, 6 November 2025 diff hist +3,570 N 2025 AMC 12A Problems/Problem 15 Created page with "==Problem 21== A set of numbers is called <imath>sum</imath>-<imath>free</imath> if whenever <imath>x</imath> and <imath>y</imath> are (not necessarily distinct) elements of the set, <imath>x+y</imath> is not an element of the set. For example, <imath>\{1,4,6\}</imath> and the empty set are sum-free, but <imath>\{2,4,5\}</imath> is not. What is the greatest possible number of elements in a sum-free subset of <imath>\{1,2,3,...,20\}</imath>? <imath>\textbf{(A) } 8 \qquad..."
• 14:5814:58, 6 November 2025 diff hist −20 2025 AMC 10A Problems/Problem 22 →Solution 1
• 14:5714:57, 6 November 2025 diff hist +124 2025 AMC 12A Problems →Problem 15
• 14:5714:57, 6 November 2025 diff hist −17 2025 AMC 12A Problems →Problem 15 Tag: Manual revert
• 14:5714:57, 6 November 2025 diff hist +17 2025 AMC 12A Problems →Problem 15
• 14:5614:56, 6 November 2025 diff hist +429 2025 AMC 12A Problems →Problem 15
• 14:5414:54, 6 November 2025 diff hist −8 2025 AMC 10A Problems/Problem 23 →Solution 1(Takes some time)
• 14:5414:54, 6 November 2025 diff hist −8 2025 AMC 10A Problems/Problem 23 →Solution 1(Takes some time)
• 14:5314:53, 6 November 2025 diff hist +17 2025 AMC 10A Problems/Problem 23 →Solution 1
• 14:5314:53, 6 November 2025 diff hist −88 2025 AMC 10A Problems/Problem 23 →Solution 1
• 14:5214:52, 6 November 2025 diff hist +27 2025 AMC 10A Problems/Problem 23 →Problem 23
• 14:5114:51, 6 November 2025 diff hist +3,284 2025 AMC 10A Problems/Problem 23 →Problem 23
• 14:3214:32, 6 November 2025 diff hist +30 2025 AMC 10A Problems/Problem 22 No edit summary
• 14:3214:32, 6 November 2025 diff hist −38 2025 AMC 10A Problems/Problem 22 →Solution 1
• 14:3114:31, 6 November 2025 diff hist +48 2025 AMC 10A Problems/Problem 22 →Solution 1
• 14:2514:25, 6 November 2025 diff hist +509 2025 AMC 10A Problems/Problem 22 No edit summary
• 14:1714:17, 6 November 2025 diff hist −364 2025 AMC 10A Problems →Problem 22 Tag: Manual revert
• 14:1514:15, 6 November 2025 diff hist +364 2025 AMC 10A Problems →Problem 22