If the pattern is A, C, E, G, what is the next letter in the sequence?

A. I

If the pattern is 5, 10, 20, 40, what is the next number?

C. 80

In the series 2, 4, 8, 16, what is the next number?

C. 32

What comes next in the series: Z, Y, X, W, ?

A. V

In the series 2, 4, 8, 16, what is the next number?

C. 32