Question

Prove that the sum of two odd numbers is always even.​

Answer 1

Answer:

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Answer 2

Answer:

The sum of two odd integers is even. Proof: If m and n are odd integers then there exists integers a,b such that m = 2a+1 and n = 2b+1. m + n = 2a+1+2b+1 = 2(a+b+1).