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

A. D

In the series: 1, 2, 4, 8, ?, 32, what is the missing number?

A. 16

In the pattern: M, N, O, ?, Q, R, what is the missing letter?

A. P

If the pattern is 1, 2, 4, ?, 16, what number should replace the question mark?

A. 8

Identify the missing letter in the sequence: J, K, L, ?, N.

B. M