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

A. V

In the sequence 1, 1, 2, 3, 5, 8, what is the next number?

D. 13

What comes next in the pattern: X, Y, Z, A, B, ?

A. C

In the sequence 5, 10, 15, 20, what is the next number?

B. 25

If the sequence is A, C, E, G, what comes next?

B. H