If the pattern is 1, 2, 4, 8, ?, 32, what number should replace the question mark?

A. 16

In a series of numbers: 2, 4, 8, 16, ?, 64, what is the missing number?

B. 32

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

A. D

Find the missing character in the series: X, Y, ?, A, B.

A. Z

If the pattern is M, N, O, ?, Q, R, what letter should replace the question mark?

A. P