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

How many times does the letter 'E' occur in the series: A, B, C, D, E, F, E, G, E, H?

B. 3

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

B. 3

If the letter Z is the 26th letter, what is the 20th letter of the alphabet?

A. T