My nephew's maternal grandmother — Aptitude Question
My nephew's maternal grandmother: A man pointing to a photograph says, 'The lady in the photograph is my nephew's… Answer and worked solution on CodeKairo.
- Topic: Blood Relations
- Section: Logical Reasoning
- Difficulty: Hard
- Time target: 120 seconds
Question
A man pointing to a photograph says, 'The lady in the photograph is my nephew's maternal grandmother.' How is the lady related to the man's sister, who has no other sister?
Options
- Mother
- Aunt
- Sister
- Grandmother
Show the answer and the worked solution
Correct answer: A. Mother
Worked solution
- The nephew is the son of the man's sister, so the nephew's mother is that sister.
- The lady is the mother of the nephew's mother, that is the sister's mother.
- So the lady is the sister's mother.
Answer: Mother.
The idea
Identify who the intermediate person is before resolving the outer relation. 'Maternal grandmother' always means the mother's mother.
Shortcut. The nephew's mother is the man's sister, and a maternal grandmother is the mother's mother — so the lady is simply the sister's mother.
Common trap. "Grandmother" — copying 'grandmother' from the sentence, which gives the lady's relation to the nephew, not to the sister.