Question:

Is n(n-1)(n+1){(n^2)+1} divisble by 5?

by  |  earlier

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if yes..can some one prove this by induction..and create a conjucture...i did this but i want to get sure...i hope i ll get fruitful replies...'',

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  1. no because the least facor is N, so unless N is 5,  it is not divisible by it... if N=0 then the whole thing is zero of course...


  2. How does that have anything to do with geography?

  3. yes!

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