How many times does the letter 'A' appear in the series: A, B, A, C, A, D, E?

B. 3

Which letter is 5 positions after the letter J in the alphabet?

A. O

If the letter 'X' is the 24th letter of the alphabet, what is the letter that comes 3 places before it?

A. U

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

B. 4

Which letter is positioned 15 places after 'A' in the alphabet?

B. P