In a sequence of letters: A, C, E, G, ?, K. What is the missing letter?

B. H

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 a sequence of letters: M, O, Q, S, ?, Y. What is the missing letter?

A. T

In a sequence of letters: A, C, E, G, ?, K. What is the missing letter?

B. H