railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Logical Reasoning Blood Relations Coded Blood Relation Problems
If A × B means that A is the mother of B, A – B means that A is the father of B, A ÷ B means that A is the sister of B, then which of the following expression shows that P is the paternal grandmother of R?
1
P ÷ R – Q
2
P × Q ÷ R
3
Q × P – R
4
P × Q – R