In each of the following questions, find which one word cannot be made from the letters of the given word. COLLABORATION

A. BRITAIN

How many pairs of letters are there in the word 'REPURCUSSION' which have as many letters between them in the word as in the alphabet and that too in the same order ? (Hint : Do not consider the pairs 'US' and 'ON'.)

B. ONE

A + B means A is the daughter of B ;
A x B means A is the son of B  and
A - B means A is the wife of B.

If Z x T - S x U + P, what is U to Z.

B. GRANDMOTHER

(i) There is a group of six persons A, B, C, D, E and F from a family. They are Psychologist, Manager, Lawyer, Jeweller, Doctor and Engineer.
(ii) The doctor is the grandfather of F who is a Psychologist.
(iii) The manager D is married to A.
(iv) C, the Jeweller is married to the Lawyer.
(v) B is the mother of F and E.
(vi) There are two married couples in the family. What is the profession of A ?

A. DOCTOR

Complete analogous pair - Anatomy : Zoology : : Paediatrics : ?

B. MEDICINE