What letter comes next in the series: z, x, v, t, ?

C. Q

  - What is the next letter in the series: A, C, E, G, I, ?

B. J

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

Identify the missing letter in the series: Z, X, V, T, ?

B. S