Blood relations – father’s line to find sibling: Introducing Rajesh, Neha said, "His brother's father is the only son of my grandfather." How is Neha related to Rajesh?
Correct Answer: Sister
Introduction / Context:We equate "his brother's father" to "his father," and match that to "the only son of my grandfather," which is Neha's father. Then we compare Rajesh and Neha.
Given Data / Assumptions:
- "His" refers to Rajesh.
- His brother's father = Rajesh's father.
- Only son of Neha's grandfather = Neha's father.
Concept / Approach:If Rajesh's father is the same person as Neha's father, Rajesh and Neha share a father ⇒ they are siblings. With Neha female, she is Rajesh's sister.
Step-by-Step Solution:
His brother's father = his father.Neha's grandfather → only son = Neha's father.Thus Rajesh's father = Neha's father ⇒ Rajesh and Neha are siblings.Verification / Alternative check:Even if mothers differ, sharing the same father still yields the sibling relation for these puzzles.
Why Other Options Are Wrong:Daughter/mother/niece require extra generational steps not stated.
Common Pitfalls:Misreading "only son of my grandfather" as an uncle rather than her father.
Final Answer:Sister