Identify the missing character in the series 1, 2, 4, 8, ?, 32.

A. 16

In the sequence 3, 6, 9, ?, 15, what is the missing number?

A. 12

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

A. E

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

A. E

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

A. 16