MathDB
Number theory

Source: Thailand MO 2015

May 28, 2016
number theory

Problem Statement

Let nn be an integer greater than 66.Show that if n+1n+1 is a prime number,than ⌈(n−1)!n(n+1)⌉\left\lceil \frac{(n-1)!}{n(n+1)}\right \rceil is ODD.ODD.
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