Which was the first Grammar Book of

How is B related to C?

I. C and D are the sons of E. B is son of E’s father.

II. E is sister of B and mother of D, who is brother of C.

In which direction is the dog with respect to his kennel?

Is S is brother in law of K?

I)  S is the only son of Q, who is mother in law of K. S is unmarried. D is daughter of P.

Among P, Q, R, S, T and U, each has a different height. Who is the smallest?

I. P is not the shortest. R is taller than S but shorter than P.

Among M, N, O, P and Q sitting around a circular table facing the centre, who sits second to the right of O?

Certain number of persons are sitting in a row facing north. Who among the following sits immediate right of R?

How many sons does S have?

I. U is mother of S’s son Q, who has two sisters F and E.

O, P, Q, S, T and V are standing in straight line facing north. Who among the following is between S and V?

What is Pankaj’s ranking among the boys in his class?