User contributions
- 16:22, 12 February 2021 (diff | hist) . . (+8) . . 2021 AMC 10A Problems/Problem 20 (→Solution 3 (similar to solution 2))
- 08:54, 12 February 2021 (diff | hist) . . (+934) . . 2021 AMC 10A Problems/Problem 20 (→Solution 2 (Casework))
