if n is odd natural number, then the expression n²+2n+1 is always
a) even natural number
b) odd natural number
c) prime natural number
d) None of these
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if n is odd natural number, then the expression n²+2n+1 is always
a) even natural number
b) odd natural number
c) prime natural number
d) None of these
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Answer:
b) odd natural number
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