User contributions
- 00:31, 11 October 2023 (diff | hist) . . (+1) . . 2021 Fall AMC 12A Problems/Problem 10 (→Solution 2 (Powers of 9))
- 00:30, 11 October 2023 (diff | hist) . . (-1) . . 2021 Fall AMC 12A Problems/Problem 10 (→Solution 2 (Powers of 9))
- 14:29, 8 January 2023 (diff | hist) . . (-16) . . Modular arithmetic/Introduction (→Residue)
- 14:29, 8 January 2023 (diff | hist) . . (+16) . . Modular arithmetic/Introduction (→Residue)
