What is the next letter in the series: M, O, Q, S, ?

A. T

Find the odd one out in the series: A, C, E, G, H, I, K.

C. H

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

A. I

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

B. S

What comes next in the series: M, O, Q, S, ?

B. T