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In how many ways can N! be written as the product of 2 integers?

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Intern
Joined: 10 Jun 2016
Posts: 3
Location: India
In how many ways can N! be written as the product of 2 integers?  [#permalink]

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29 Aug 2017, 21:38
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Difficulty:

55% (hard)

Question Stats:

50% (01:39) correct 50% (01:18) wrong based on 18 sessions

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In how many ways can N! be written as the product of 2 integers?
1. The number N! Has 30 factors
2. The highest power of 3 in N! is 4
Math Expert
Joined: 02 Sep 2009
Posts: 55150
Re: In how many ways can N! be written as the product of 2 integers?  [#permalink]

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29 Aug 2017, 21:48
Re: In how many ways can N! be written as the product of 2 integers?   [#permalink] 29 Aug 2017, 21:48
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