In the series X, Y, Z, ?, B, C, what character should replace the question mark?

A. A

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

B. 16

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

A. D

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

A. D

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

A. A