I was wondering if this type of question can be asked on the GRE. One version of question that I have come across in the quizzes and in the lectures is the one below where we have to find #numbers in a factorial but could the question ask to find all the factors possible of a factorial?
Yes.
So, how will we find that? Is there any video that explains that. I want to make sure I haven’t missed it.
I have seen the one where Greg uses brute force to find that but it seems pretty time consuming so what would we do for the case of large factorials?
They won’t ask it for large factorials for this reason, but broadly you just find the factors of each of 1, 2, 3 … n and use that to find the total number of factors.
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