Question
The smallest value of n, for which 2n + 1 is not a prime number, is:
Answer: Option B
 - (2 x 1 + 1) = 3, (2 x 2 + 1) = 5, (2 x 3 + 1) = 7. (2 x 4 + 1) = 9
which is not prime.
n = 4
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 - (2 x 1 + 1) = 3, (2 x 2 + 1) = 5, (2 x 3 + 1) = 7. (2 x 4 + 1) = 9
which is not prime.
n = 4
Was this answer helpful ?
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