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prove that : n 7 -n is divisible by 7.

prove that : n7-n is divisible by 7.

Grade:11

1 Answers

Harsh Patodia IIT Roorkee
askIITians Faculty 907 Points
8 years ago
Use principle of mathematical induction to prove above. You can check for n=1,2
then assume it to be true for n=k (some variable) then using this relation you can prove it for n=k+1.

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