In the series A, B, C, D, E, F, G, how many times does the letter 'C' appear?

A. 1

If the position of 'Z' is 26, what is the position of 'M'?

A. 12

In the series A, B, C, D, E, F, G, H, I, J, how many letters are vowels?

B. 4

What is the 10th letter of the English alphabet?

A. J

In the series X, Y, Z, A, B, C, how many letters are before 'C'?

B. 3