Find the missing letter in the series: b, d, f, h, ?

A. J

What letter completes the series: z, x, v, t, ?

C. Q

Find the odd one out in the series: A, D, G, J, K, N

A. K

Find the missing letters in the series: b, d, f, h, ?

A. J

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

B. S