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Integer Check Conclusion (Posted on 2016-01-06) Difficulty: 3 of 5
Is the expression gcd(X, Y)*C(Y,X)/Y always an integer for every pair (X,Y) of postive integers with 1 ≤ X ≤ Y.

Give reasons for your answer.

*** C(m,n) = (m)!/(n!*(m-n)!)

No Solution Yet Submitted by K Sengupta    
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