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

C. F

In the series: 2, 4, 8, ?, 32, what number should replace the question mark?

B. 16

What character should be placed in the blank: 1, 3, 5, ?, 9?

B. 7

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

A. D

Identify the missing letter in the pattern: X, Y, ?, A, B.

A. Z