What Are Blood Relations?
Blood Relations is a reasoning topic in which we determine how one person is related to another using information about family members.
Questions may involve parents, children, grandparents, siblings, uncles, aunts and relationships through marriage.
Important Relationships
Father's father – Paternal grandfather.
Mother's father – Maternal grandfather.
Father's mother – Paternal grandmother.
Mother's mother – Maternal grandmother.
Father's brother – Paternal uncle.
Father's sister – Paternal aunt.
Mother's brother – Maternal uncle.
Mother's sister – Maternal aunt.
Generation Method
+2 – Grandparents.
+1 – Parents.
0 – Brothers and sisters.
−1 – Children.
−2 – Grandchildren.
Worked Example 1
Ravi is Kumar's son. Kumar is Murugan's son. How is Murugan related to Ravi?
Solution:
Kumar is Ravi's father.
Murugan is Kumar's father.
Therefore, Murugan is Ravi's father's father.
Answer: Paternal grandfather.
Worked Example 2
Lakshmi is Meena's mother. Raja is Lakshmi's brother. How is Raja related to Meena?
Solution:
Lakshmi is Meena's mother.
Raja is Lakshmi's brother.
Therefore, Raja is Meena's mother's brother.
Answer: Maternal uncle.
Worked Example 3
Rani is Suresh's mother. Suresh is Priya's father. How is Rani related to Priya?
Solution:
Rani is Suresh's mother.
Suresh is Priya's father.
Therefore, Rani is Priya's father's mother.
Answer: Paternal grandmother.
Examination Shortcuts
1. Write down every person's name. 2. Arrange people by generation. 3. Identify gender only from information provided. 4. Draw a family tree. 5. Never assume an unstated relationship.
Book-Back Progress
Relevant area: Logical Reasoning / Mental Ability.
Exact Samacheer Kalvi textbook chapter and exercise: source not yet verified.
Verified PYQs: 0.
Verified book-back questions: 0.
Worked examples: 3 original instructional examples.
