Which of the following does not belong in the series: 3, 6, 9, 12, 15, 18?

D. 14

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

A. V

If the pattern is 3, 6, 12, 24, what is the next number?

C. 48

If the pattern is 1, 1, 2, 3, 5, what is the next number?

C. 8

If the pattern is 1, 1, 2, 3, 5, what is the next number?

A. 7