What is the next number in the series: 3, 6, 11, 18, ?

B. 25

What is the missing number in the series: 2, 4, 8, 16, ?, 64?

A. 32

What number should replace the question mark in the series: 1, 1, 2, 3, 5, ?

B. 8

Find the missing number in the series: 5, 11, 23, 47, ?, 191

C. 97

What is the missing number in the series: 2, 4, 8, 16, ?, 64?

A. 32