In the sequence A, B, C, ?, E, F, what character should replace the question mark?

A. D

In a sequence of letters: A, C, E, G, ?, K, M, O, what is the missing letter?

B. H

If the pattern is M, N, O, ?, Q, R, what letter should replace the question mark?

A. P

Identify the missing character in the series 1, 4, 9, ?, 25, 36.

A. 16

In a sequence of letters: A, C, E, G, ?, K. What is the missing letter?

C. H