Problem

2012 AIME I Problem 1

Find the number of positive integers with three not necessarily distinct digits, abc, with a \neq 0 and c \neq 0 such that both abc and cba are multiples of 4.

Leading zeroes must be inputted, so if your answer is 34, then input 034


Full credit goes to MAA for authoring these problems. These problems were taken on the AOPS website.


Show/Hide Problem Tags

Problem Tags: Counting and probability

Want to contribute problems and receive full credit? Click here to add your problem!
Please report any issues to us in our Discord server
Go to next contest problem (SHIFT + Right Arrow)