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OpenStudy (anonymous):
suppose a and b are positive integers. Prove if ab is odd, then both a and b are odd.
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OpenStudy (anonymous):
If all you're doing is proving it that a and b are odd, then substitute in odd numbers for a and b. 3*3= 9 5*7=35 9*9=81
OpenStudy (anonymous):
I have to do it theoretically not with numbers.
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