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For how many values of n where n is a positive integer less than 10 is n+1/2 an integer?

A) None
B) One
C) Three
D) Four
E) Five

Please I would like some help explaining how to get the answer :)

2 answers

I try to solve it but I couldn't get the answer

N+1÷2
N is less than 10, which means that we can take n=9
9+1÷2
=10÷2
=5
Answer is 5

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