SOLUTION: Theroem: If a is even and b is odd, then ab is even?? Proof:???

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Question 490733: Theroem: If a is even and b is odd, then ab is even??
Proof:???
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
Let a = 2m, b = 2n+1 where m and n are integers. Then ab = (2m)(2n+1) = 2(2mn+m). 2mn+m is an integer, so 2(2mn+m) is even; ab is even.