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

A. 1

If the letter 'Z' is the 26th letter, what is the 5th letter before 'Z'?

A. U

What is the 10th letter of the English alphabet?

A. J

In the series A, B, C, D, E, F, G, H, I, J, how many letters are there before the letter 'E'?

B. 4

If the letter 'K' is the 11th letter of the alphabet, what is the 15th letter?

C. O