Select the odd group of numbers from the following.

B. (20, 30)

Identify the odd pair of words from the following options.

C. CHEF - RECIPE

In a certain code, if 'CAT' is coded as '3120', 'DOG' is coded as '4157'. How is 'FISH' coded?

A. 6148

In a family of six members P, Q, R, S, T, and U, there are two males and four females. P is a teacher and is married to Q. R is the son of P. S is the sister of R. T is the mother of U. Who is U's father?

A. P

Find the missing letter in the series: b, d, f, h, ?

A. J