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

B. 4

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

A. 1

How many times does the letter 'T' appear in the series: A, B, C, T, D, T, E, F, T, G?

B. 3

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

B. 3

In the sequence A, B, C, D, E, F, G, H, how many times does the letter 'A' occur?

A. 1