Blood Relation #1 Aptitude Question and Answer

1. A's father's mother-in-law only daughter's son is B. How is A related to B?

1) Brother
2) Sister
3) Nephew
4) Cannot be determined

...Answer is 4)
A's father's mother-in-law's only daughter is A's mother. A's mother's son is A's brother. But A can be either brother or sister to B.

2. If A's father is B, C is the father of B and D is A's mother, then how is C related to D?

1) Father
2) Grandfather
3) Father-in-law
4) Uncle

...Answer is 3)
A's Father is B and mother is D. Therefore D is B's wife and C is the father of B. Hence C is D's father-in-law.

3. A+B means A is the son of B. A-B means A is the daughter of B. AxB means A is the father of B. A/B means A is the mother of B. If M x N + O - P / Q, then how is M related to Q?

1) Husband
2) Cousin
3) Brother-in-law
4) Uncle

...Answer is 3)
M x N + O - P / Q means M is the father of N, N is the son of O, O is the daughter of P. P is the mother of Q. M is the father of N and N is the son of O means M is the husband of O. O is the daughter of P and P is the mother of Q means O is the sister of Q. M is the husband of O and O is the sister of Q means M is the brother-in-law of Q.

4. Pointing to a person, Raju said, " He is the only brother of my father's mother's daughter." How is the person related to Raju?

1) Brother
2) Father
3) Uncle
4) Nephew

...Answer is 2)
Raju's father's mother's daughter is Raju's father's sister. Raju's father's sister's only brother is Raju's father. Hence the person is Raju's father.