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

B. 32

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

C. 80

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

A. 32

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

C. 80

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

B. 192