B is the brother of A, S is the sister of B, E is the brother of D, D is the daughter of A, F is the father of S. Who is the uncle of E? MCQ with Answer and Explanation

Explanation:
The only child of Reena's grandfather is Reena's parent (father or mother). The only son of Reena's parent is Reena's brother. Thus, Reena is the sister of the boy.

Explanation:
K % N → K is grandfather of N. N @ P → N is son of P, so P is parent of N (father). P # R → P is husband of R, so R is wife of P. K is grandfather of N, and N is son of P, so K is father of P. Since P is husband of R, K is father-in-law of R.

Explanation:
R is the wife of S. P is S's brother, so P is R's brother-in-law (husband's brother).