A * B means 'A is the father of B'. A + B means 'A is the son of B'. A - B means 'A is the brother of B'. A & B means 'A is the sister of B'. If 'W * Q & R - S + T', then what is the relation of W to T? MCQ with Answer and Explanation

Explanation:
A @ B → A husband of B. B & C → B mother of C. So C is child of A and B. C × D → C brother of D, so D is sister of C. D # E → D wife of E. Hence E is husband of D (daughter of A), i.e., daughter's husband.

Explanation:
C ÷ M → C sister of M. M – S → M mother of S. S – K → S mother of K. K + T → K father of T. T × Q → T husband of Q. K is father-in-law of Q (true). S is mother of K, so S is not father of T's father. Hence B is incorrect. C: S is daughter of C's sister M (true). D: M is mother of S, who is mother of K, so M is mother of K's mother (true).

Explanation:
P @ Q → P wife of Q. Q # B → Q father of B. B % Y → B husband of Y. Y & C → Y daughter of C. C @ E → C wife of E, so E husband of C. Y is daughter of C and E. B is husband of Y, thus B is son-in-law of E.