What number would replace the question mark in the series given below? 11, 13, 17, 19, 23, ?, 31, 37
A28
B25
C27
D29 ✓ Correct
Correct answer: (D) 29
Explanation
The missing term is 29.
The series lists consecutive prime numbers.
11, 13, 17, 19, 23 are primes in order.
The next prime after 23 is 29.
Then 31 and 37 continue the primes.
So the blank is 29.
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