Blood Relationship Question 1: Consider the following:

A+B means A is the Son of B.

A-B means A is the wife of B.

What does the expression P+R-Q mean?

A. Q is the son of P

B. Q is the wife of P

C. Q is the father of P

D. None of the above

P + R means P is the son of R.

R – Q means R is the wife of Q. This implies Q is the father of P.

Therefore, C is the correct option.

Blood Relationship Question 2: Read the passage below and answer the questions that follow.

A, B, C, D and E are members of the same family. There are two fathers, two sons, two wives. The teacher is the wife of a lawyer who is the son of a doctor. E is not a male, neither also the wife of a professional. C is the youngest person in the family and D is the eldest. B is a male.

1. How is D related to E?

A. Husband

B. Son

C. Father

D. Wife

2. Who are the females in the group?

A. C and E

B. C and D

C. E and A

D. D and E

3. Whose wife is the teacher?

A. C

B. D

C. A

D. B

> The teacher is the wife of a lawyer who is the son of a doctor. E is not a male, neither also the wife of a professional. D is the eldest.

This implies the lawyer is the son of D and E, who is a doctor. D is not a professional.

> There are two fathers and two sons. C is the youngest.

This implies C is the son of the lawyer.

> B is a male.

This implies B is the lawyer and A is the teacher.

Blood Relation Tree:

Blood Relation Tree (Practice Exercise 4)

1. Clearly, D is the husband of E. So, A is the correct option.

2. The females are E and A. So, C is the correct option.

3. B’s wife is the teacher. So, D is the correct option. 

Blood Relationship Question 3: Read the passage below and answer the questions that follow.

A, B, C, D, E, F are members of a family. They are engineer, stenographer, doctor, draughtsman, lawyer and judge (not in order). A, the engineer is married to the lady stenographer. The judge is married to the lawyer. F, the draughtsman is the son of B and brother of E. C, the lawyer is the daughter-in-law of D. E is the unmarried doctor. D is the grandmother of F. There are two married couples in the family.

1. What is the profession of B?

A. Judge

B. Lawyer

C. Draughtsman

D. Cannot be determined

2. Which of the following is/are a couple/couples?

A. AD only

B. BC only

C. Both AD and BC

D. Both AC and BD

3. What is the profession of D?

A. Judge

B. Stenographer

C. Doctor

D. Cannot be determined

A -> Engineer, married to the lady Stenographer

F -> Draughtsman

C -> Lawyer, married to the judge

E -> Doctor

> C is the daughter-in-law of D. This implies Judge is a male. D is the grandmother of F. This implies D is the stenographer and B is the judge.

Blood Relation Tree:

Blood Relation Tree (Practice Exercise 3)

Now let’s answer the questions:

1. Clearly, A is the correct option.

2. Clearly, C is the correct option.

3. Clearly, B is the correct option.

Blood Relationship Question 4: Four persons A, B, C and D consisting of two married couples are in a group. Both women are shorter than their respective husbands. A is the tallest among the four. C is taller than B. D is B’s brother. In this context, which one of the following statement is not correct?

A. All four have family ties

B. B is the shortest among the four

C. C is taller than D

D. A is B’s husband

> Since A is the tallest, he must be a male. D is the brother of B. Therefore, C must be D’s wife. This implies B is A’s wife.

> Since C is D’s wife, D is taller than C. This implies B is the shortest among the four.

Clearly, C is the correct option.

Blood Relationship Question 5: At a family reunion were the following people: one grandfather, one grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law. But not as many people attended as it sounds. How many persons were there?

A. 5

B. 10

C. 15

D. 7

The family structure should look like this:

Blood Relation Tree (Practice Exercise 5)

> Grandfather: A

> Grandmother: B

> Two fathers: A and X

> Two mothers: B and Y

> Four Children: X, P, Q and R

> Three Grandchildren: P, Q, and R

> One brother: P

> Two Sisters: Q and R

> Two Sons: X and P

> Two daughters: Q and R

> One father-in-law: A

> One mother-in-law: B

> One daughter-in-law: Y

Therefore, only 7 persons are required to fulfill all the conditions. So, D is the correct option.