Asked by Tomas

If n is an integer, which of the following must be odd?

a. 3n-5
b. 3n+4
c. 4n+10
d. 4n-5
e. 5n+7

please answer and explain
Answered by Steve
even+odd = odd
4n is even

so, what do you think?
Answered by Tomas
d, right
Answered by Steve
correct
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