Blood relations with symbolic operators: Identify the expression that makes N the grandmother of P. Operator meanings: A $ B ⇒ B is the father of A A # B ⇒ B is the mother of A A * B ⇒ B is the sister of A A @ B ⇒ B is the husband of A Choose the correct expression indicating "N is the grandmother of P".
Verbal Reasoning
Blood Relation Test
Difficulty: Medium
Choose an option
Answer
Correct Answer: None of these
Explanation
Test each option quickly (a) leads to N being father of M ⇒ N is grandfather, not grandmother. (b) yields N as grandmother of Q (who is P's husband), i.e., grandmother-in-law—not P's grandmother. (c) gives M as sister of N, making M a grandaunt of P.
Conclusion None of the given chains make N the grandmother of P. Therefore, None of these.