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

A. H

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

B. S

Complete the series: B, D, F, H, ?

A. J

Find the odd one out in the series: A, C, E, G, I, K, M, N

D. N

Complete the series: B, D, F, H, ?

D. I