In the sequence: M, N, O, ?, Q, what letter is missing?

A. P

If the pattern is 1, 4, 9, ?, 25, 36, what number should replace the question mark?

A. 16

In the sequence 2, 4, 8, 16, ?, 64, what is the missing number?

B. 32

Find the missing character in the series: M, N, O, ?, Q, R.

A. P

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

A. 16