Question: (a) Prove, by contraposition, that if n2 is a multiple of 3, then n is also a multiple of 3. (nZ) (b) Use contradiction to

(a) Prove, by contraposition, that if n2 is a multiple of 3, then n is also a multiple of 3. (nZ) (b) Use contradiction to prove that 3- is irrational.

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