User contributions
- 20:43, 12 December 2019 (diff | hist) . . (-19) . . 2019 AMC 10A Problems/Problem 19 (→Solution 5 (using the answer choices))
- 20:42, 12 December 2019 (diff | hist) . . (+19) . . 2019 AMC 10A Problems/Problem 19 (→Solution 5 (using the answer choices))