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What is the smallest positive integer n such that the rightmost three digits of n! and (n+1)! are the same?

 Jun 26, 2019
 #1
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10!  =  3628800

 

11!  = 39916800

 

 

cool cool  cool

 Jun 26, 2019
 #2
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Thanks Cphill!!

sudsw12  Jun 26, 2019

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