Edward A. answered • 02/05/19
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Math Tutor, Retired Computer Scientist and Technical Communicator
Saamarth, you need to include the rest of the problem. It asks “which of the following”, so you need to show us the choices that the original problem showed.
Saamarth A.
1. mn , 2. m(n-1), and 3. (m-1)(n+1).
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02/06/19
Edward A.
I’m sure I’m too late to help, but perhaps someone in the audience would like to know. Let’s step forward a little bit: Since m+1 is odd, m must be even. Also, since n-1 is odd, n must be even. Answer 1: mn is even*even Answer 2: m(n-1) is even * odd Answer 3: (m-1)*(n+1) is odd*odd Finally, which of these result in an even value?
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04/18/19
Saamarth A.
Thank you for telling me because I forgot. I'll put those into the question at once in the comment box.02/06/19