User contributions
- 23:12, 13 December 2017 (diff | hist) . . (+369) . . N Talk:2000 AMC 12 Problems/Problem 4 (Created page with "Hello all, I am reviewing for the AMC 10 and I came across this problem; while the solution says to look at the numbers in mod10, wouldn't it take a really long time to list...") (current)
