What is the next number in the series: 12, 24, 48, 96, ?

A. 192

Identify the missing term in the series: 1, 4, 9, 16, ?, 36

B. 25

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

C. 80

Identify the missing term in the series: 3, 7, 15, 31, ?, 127

A. 63

Identify the missing number in the series: 5, 10, 20, 40, ?, 160

A. 80