In the series 5, 10, 15, 20, what is the next number?

B. 25

In the sequence A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, how many times does the letter 'A' appear?

A. 1

If the letter Z is the 26th letter, what is the position of letter M in the alphabet?

A. 12

If the sequence is A, C, E, G, what is the next letter?

B. H