1.  If A + B means B is the brother of A; A x B means B is the husband of A; A - B means A is the mother of B and A % B means A is the father of B, which of the following relations shows that Q is the grandmother of T?
A. Q - P + R % T
B. P x Q % R - T
C. P x Q % R + T
D. P + Q % R - T

Answer: Option A

Explanation:

Q - P ? Q is the mother of P

P + R ? R is the brother of P

Hence, ? q is the mother of R

R % T ? R is the father of T.

Hence, Q is the grandmother of T.