Blood Relation Questions and Answers

Answer: B

P is M's maternal uncle.

Read the expression M ÷ L - N + P × Q step by step:

• M ÷ L: M is the daughter of L.
• L - N: L is the husband of N, so N is M's mother.
• N + P: N is the sister of P.
• P × Q: P is the brother of Q, so P is male.

P is the brother of M's mother, that is, M's maternal uncle. He cannot be her father (that is L), her son, or her grandfather.

Answer: D

D is B's brother.

A and his wife E have three children: B, C and D. B is a brother of C, and C is a sister of D, so C is a daughter. The statement that A (the husband of E) has only one daughter means C is that daughter, so the third child, D, must be a son.

D is therefore a son of the same parents as B, B's brother. 'Sister' is ruled out because C is the only daughter, and D cannot be B's mother or father since they are siblings.

Answer: A

M is O's son.

M is the son of P, and O is the husband of P. So O is M's father, and M is O's son. The information that Q is O's granddaughter does not affect the relation between M and O.

M is a son, so 'Daughter' and 'Mother' are wrong, and 'Father' reverses the relation: O is the father, M the son.

Answer: B

The uncle of A is P.

Work out A's parent first. F is the daughter of D, and A is the brother of F, so A is also a child of D. P is the brother of D, so P is the brother of A's parent, that is, A's uncle.

X is the sister of P, so X is also a sibling of D and is A's aunt, not uncle. F is A's sister. M is the father of X, and so of P and D as well, which makes M A's grandfather.

Answer: D

P's relation to X is not among the options, so the answer is None of these.

Z is the son of P, and Y is the brother of Z, so Y is also a child of P. X is the wife of Y, so P is X's father-in-law or mother-in-law, depending on P's gender, which the question does not state.

P belongs to the generation above X, so P cannot be X's sister or brother. Nothing makes P a grandparent either: P is the parent of X's husband, not of X's parent. With no option naming a parent-in-law, 'None of these' is right.

Answer: A

B is E's Sister-in-Law.

C is a sister of D, so C and D are siblings. A is the father of C, and D is the son of B, so B is the other parent of the same children: B is A's wife, C and D's mother.

E is the brother of A. The wife of one's brother is one's sister-in-law, so B is E's sister-in-law.

B cannot be E's brother or brother-in-law, because as the children's mother B is female, and B is not E's sister, since B is related to E only by marriage.

Answer: C

The woman is Rita's sister.

Work from the end of Rita's statement. The only son of Rita's grandfather is Rita's father. So the woman's sister's father is Rita's father, which means the woman herself is a daughter of Rita's father.

The woman and Rita therefore share a father, so the woman is Rita's sister. Nothing places her a generation above Rita, which rules out 'mother' and 'aunt', and nothing suggests a marriage, which rules out 'mother-in-law'.

Answer: D

E is C's Wife.

A is B's brother and A and D are brothers, so A, B and D are siblings. E is B's mother, so she is the mother of all three; C is D's father, so he is the father of all three. The mother and father of the same children are husband and wife.

Niece, sister and aunt would each place E outside the parent generation, which the facts rule out.

Drawing a quick family tree, with C and E above A, B and D, makes the relation obvious.

Answer: B

B is C's maternal uncle.

A's mother is B's sister, and C is her daughter. So C is the daughter of B's sister, and B is the brother of C's mother, which makes B C's maternal uncle (the question treats B as male).

B cannot be C's father, since C's mother is B's sister. 'Uncle' alone is less precise than 'maternal uncle', which names the mother's side, and 'daughter' is not a relation B can have to C here.

Answer: B

The woman is Ramesh's Daughter.

The only son of Ramesh's mother is Ramesh himself (Ramesh being a man's name), so 'the daughter of the only son of my mother' is the daughter of Ramesh.

She would be his sister only if she were his mother's daughter, his niece if she were a sibling's daughter, and his cousin if she were the child of his parent's sibling. The phrase 'only son' rules all of those out.