What letter comes next in the series: b, d, f, h, ?

A. J

Identify the missing letter in the series: Z, Y, X, W, ?

A. V

What number should replace the question mark in the series: 1, 1, 2, 3, 5, ?

B. 7

Complete the series: b, d, f, h, ?

A. J

Find the incorrect letter in the series: A, D, G, J, M, P, S, V

D. V