A is the son of C. C and Q are sisters. Z is the mother of Q and P is the son of Z. Which of the following statements is correct? MCQ with Answer and Explanation

Explanation:
The brother of the man's wife is the man's brother-in-law. This brother-in-law is the son of the lady's only brother. Thus, the lady's brother is the father of the man's wife. Therefore, the lady is the sister of the wife's father (father's sister).

Explanation:
A @ B → A father of B. B # C → B brother of C. C # D → C brother of D. So A is father of B, C, D. D & E → D daughter of E. Since D is child of A, E must be wife of A. Hence A is husband of E.

Explanation:
P ÷ Q → P mother of Q. Q – S → Q father of S. S + K → S brother of K, so K is also son of Q. K – T → K father of T. T × R → T husband of R. K is father-in-law of R (true). S is brother of K, T's father (true). Q is father of K, so father of T's father (true). P is mother of Q, so P is grandmother of K, not mother of K's mother. Hence C is incorrect.