Find the missing character in the series: X, W, V, ?, T.

A. U

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

A. D

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

A. 16

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

A. A

In the sequence 2, 4, 8, ?, 32, 64, what is the missing number?

A. 16