If A + B means that A is the brother of B, A × B means that A is the sister of B, A – B means that A is the mother of B, A ÷ B means that A is the father of B then which of the following expression shows that T is the paternal grandmother of R?
A. P + Q ÷ R × S + T
B. P + S – Q × T ÷ R
C. P × R ÷ Q + S – T
D. T – P ÷ S + R × Q
Sol:
Family tree according to option D
Option D shows that T is the paternal grandmother of R.
