Choose the odd number pair from the list below:

B. 20, 30

Identify the missing letter in the series: a, e, i, o, ?

A. U

If 'APPLE' is coded as 'BQQMF', what would 'BANANA' be coded as?

A. CBONBO

If 'APPLE' is coded as 15, 12, 18, 20, 22 and 'BANANA' is coded as 10, 12, 14, 16, 18, 20, what is the code for 'GRAPE'?

B. 16, 18, 20, 22, 24

P is the uncle of Q. Q is the daughter of R. How is R related to P?

B. SISTER