What letter should replace the question mark in the series: a, e, i, o, ?

A. U

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

B. 4

Find the missing letter in the series: m, n, p, q, ?

A. R

In a code, 'APPLE' is represented as '1-16-16-12-5'. What is the code for 'GRAPE'?

A. 7-18-1-16-5

In a family, A is the grandfather of B. B has two siblings, C and D. If A is married to E, who is the grandmother, what is the relationship of E to C?

C. GRANDMOTHER