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

B. 32

What number should replace the question mark in the series: 2, 4, 8, 16, ?

C. 32

Identify the missing term in the series: 1, 1, 2, 3, 5, ?

B. 8

Complete the series: 12, 24, 48, 96, ?

B. 192

Find the missing number in the series: 5, 10, 20, 40, ?

A. 80