'A # B' means 'A is the brother of B'.
'A @ B' means 'A is the daughter of B'.
'A & B' means 'A is the husband of B'.
'A % B' means 'A is the wife of B'.
If D @ N @ H & Y @ F % V, then how is N related to F?

Correct option is A

D @ N @ H & Y @ F % V → D is the daughter of N, N is the daughter of H, H is husband of Y, Y is daughter of F and F is the wife of V. The family diagram from the above information is given below as-
@ → Daughter
& → Husband
% → Wife
# → Brother

Therefore, N is daughter’s daughter of F.