Difference between revisions of "2021 JMPSC Invitationals Problems/Problem 15"
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Revision as of 14:26, 11 July 2021
Problem
Abhishek is choosing positive integer factors of 
with replacement. After a minute passes, he chooses a random factor and writes it down. Abhishek repeats this process until the first time the product of all numbers written down is a perfect square. Find the expected number of minutes it takes for him to stop.
Solution
asdf orz
