What character should replace the question mark in the sequence: A, B, C, ?, E?

A. D

What character should replace the question mark in the pattern: X, Y, Z, A, B, ?

A. C

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

A. D

Find the missing character in the pattern: 2, 4, 8, ?, 32.

A. 16

In a sequence of letters: M, O, Q, S, ?, Y. What is the missing letter?

A. T