Asked by Anon
Use proof by contraposition to prove that the following statement is true for all positive integers n:
If n2 is a multiple of 3, then n is a multiple of 3.
If n2 is a multiple of 3, then n is a multiple of 3.
Answers
Answered by
Steve
hint:
If 3|n^2 then 3|n*n
If 3|n^2 then 3|n*n
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