Blood Relation is one of the most important topics from the reasoning section that is asked in almost all the competitive exams. These questions will test your understanding potential within the given time.

The questions are based on relations like a brother, mother, sister, father, brother, nephew, niece, cousins, grandparents, etc. Let us understand different types of blood relations problems and how to solve Blood Relation Questions easily in the exam.

Types of Blood Relations

Firstly, you must know that there are different types of blood relation questions asked in the examination. 

Single Person Blood Relations

The single-person relation is the relation between only two people.

For Example: 

Pointing to a photograph of a boy Mr.Ram said, “He is the son of the only son of my mother.” How is Mr. Ram related to that boy?

 A) Brother B) Uncle C) Cousin D) Father

Ans: D

Mixed Blood Relations

These are mutual relations depending on two or more persons. These questions can be solved with the help of diagrams.

For Example: 

Akhil is the son of Aman’s father’s sister. Sahil is the son of Divya who is the mother of Gaurav and grandmother of Aman. Ashok is the father of Tanya and the grandfather of Akhil. Divya is the wife of Ashok. How is Akhil related to Divya?

A) Nephew B) Son C) Grandson D) Data inadequate

Ans: C

Coded Blood Relations

In this, the relationships are represented by codes and symbols like +, -, /, *. You have to analyze the relation based on the given code.

For Example: 

If P+Q means P is the husband of Q, P/Q means P is the sister of Q, P*Q means P is the son of Q. How is D related to A in D*B+C/A?

A) Brother B) Sister C) Nephew D) Daughter

Ans: C

clat mock test

clat Mock test

Important Blood Relations

To solve blood relation questions, it is important that you must be aware of each relationship in a family. To help you understand the relations between different family members, we have provided some important blood relations in the table below.

Relation Used Term
Father of Grandfather or Father of Grandmother Great Grandfather
Mother of Grandfather or Mother of Grandmother Great Grandmother
Father’s Father or Mother’s Father Grandfather
Father’s Mother or Mother’s Mother Grandmother
Uncle’s Daughter or Aunt’s Daughter Cousin
Uncle’s Son or Aunt’s Son Cousin
Brother’s Son or Sister’s Son Nephew
Brother’s Daughter or Sister’s Daughter Niece
Father’s Son or Mother’s Son Brother
Father’s Daughter or Mother’s Daughter Sister
Mother’s Brother Maternal Uncle
Father’s Brother Uncle
Mother’s Sister Aunt
Father’s Sister Aunt
Daughter’s Husband Son-in-law
Son’s Wife Daughter-in-law
Husband’s Brother or Wife’s Brother Brother-in-law
Husband’s Sister or Wife’s Sister Sister-in-law
Husband’s Father or Wife’s Father Father-in-law
Husband’s Mother or Wife’s Mother Mother-in-law

Tips to Solve Blood Relation Questions

The blood relation topic is the most scoring topic in the reasoning section. If you have an idea about the relations, it is easy to score maximum marks in this section.

To help you better understand how to prepare for blood relation questions, we have provided some tips and strategies here.

Apply the Question to Yourself

This is one of the best ways to solve the problems related to blood relations. Try to relate every statement given in the question to yourself.

The starting name of the statement could be assumed as your name.

Break the Question into Small Parts

If the statement is very long, try to break down every statement in the question into sub-statements. Then, try to find the solution using these sub-statements.

Do not assume the Gender

Try to avoid assuming the gender of any person given in the statement just based on the names given in the question.

Draw Clear Diagrams 

Drawing a family tree is an easy trick to solve the blood relation questions with 100% accuracy.

Use Symbols to Represent the Data

You can use symbols like square, circle, Square + Circle, Square - Circle while the statements given in the question.

For Example:

  • Male can be represented as a square
  • Female can be represented as a circle
  • If Husband and Wife relation is given, then you can represent it as Square + Circle
  • If Brother and Sister relation is given, then it can be represented as Square – Circle
  • Generation Gap can be represented as |

Sample Blood Relation Questions with Answers

To help you get an idea about the type of questions asked from the blood relation topic, we have provided some sample questions here for your reference.

Q) Pointing to a boy in the photograph, Monika said, “His sister is the only daughter of my father”. How is the boy related to Monika’s father?

Ans: Son

Q) Pointing to a person, Aman said, "His only brother is the father of my daughter's father". How is the person related to Aman?

Ans: Uncle

Q) John introduces Mary as the daughter of the only son of my father’s wife. How is Mary related to john?

Ans: Daughter

Q) Sunita is daughter of Karan. Kanika, is the mother of Karan. Mita is the wife of Karan. Poonam & Shruti are daughters of Karan.

How is Shruti related to Karan?

Ans: Daughter

Q) A and B are brothers and C and D are sisters. A’s son is D’s brother. How is B related to C?

Ans: Uncle

Q) If P+Q means P is husband of Q, P/Q means P is the sister of Q, P*Q means P is the son of Q. How is D related to B in B/A*C+D?

Ans: Mother

Q) Pointing to a girl, Kirti Said, “She is the daughter of my brother’s wife”. How is the girl related to Kirti?

Ans: Niece