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Let P(n):n^2+n+1 is an even integer. If ...

Let `P(n):n^2+n+1` is an even integer. If `P(k)` is assumed `true=>P(k+1)` is true. Therefore P(n) is true:

A

for `n gt 1`

B

for all `n in N`

C

for `n gt 2`

D

None of these

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The correct Answer is:
D
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