Blood Relations Shortcut Tricks | Logical Reasoning (LR) and Data Interpretation (DI) - CAT PDF Download

Meaning

Blood relations, also known as family relationships, form an essential part of logical reasoning and analytical thinking tests. These questions are designed to assess your ability to deduce familial connections based on given information about relationships among family members.

Simply blood relations means blood relationship among members of the family.

Family Tree

A family tree, also known as a genealogical tree or pedigree chart, is a graphical representation that depicts the familial relationships and ancestry of individuals within a family.

•  It typically includes information about direct ancestors, descendants, siblings, and other relatives, illustrating how individuals are connected through blood relationships or marriage.

Observations from the family tree

1. Akash and Arjun are brothers and Anne is the wife of Arjun.
2. Myra is the daughter of Arjun and Anne.
3. Veena is the mother of Akash and She has three brothers, Vishnu, Ravi and Guru.
4. Lakshmi Narayan is the father of Arjun and the son of Krishna Rao and Radha.
5. Narayan and Shakuntala are husband and wife and are the parents of Veena.

Important Terms in Blood Relations

How to Draw a Family Diagram (Important Symbols)

Below are the some basic important symbols used to present the family relationships easily. On the basis of following diagram, you can find any blood relationships easily and quickly.
Some Basic Important blood relationships are shown below through diagram.

Solved Examples

Example 1: In a family, there are seven persons, comprising two married couples. T is the son of M and the grandson of K. M is a widower. M and R are brothers and W is the daughter - in - Law of J, who is the mother of R and the grandmother of D. How is D related to M?
(a) Son 
(b) Son-in-Law 
(c) Nephew or Niece 
(d) Brother
Ans: (c)
Explanation:
D is Nephew or Niece of M because gender of D is not specify in the question.

Example 2: Arti and Saurabh are the children of Mr and Mrs Shah. Ritu and Shakti are the children of Mr and Mrs. Mehra. Saurabh and Ritu are married to each other and two daughter Mukti and Shruti are born to them. Shakti is married to Rina and two children Subhash and Reshma are born to them. How is Arti related to Shruti? 
(a) Mother 
(b) Mother-in-Law 
(c) Sister 
(d) Aunt
Ans: (d)
Explanation:
Arti is Aunt of Shruti. It can be seen clearly from the above diagram.

Example 3: T, S and R are three brothers. T's son Q is married to K and they have one child Rahul blessed to them. M the son of S is married to H and this couple is blessed with a daughter Madhvi. R has a daughter N who is married to P. This couple has one daughter Karuna born to them. How is Madhvi related to S? 
(a) Daughter 
(b) Niece 
(c) Grand Daughter 
(d) None of The Above
Ans: (c)
Explanation:
In the above diagram, its clearly shows that Madhvi is granddaughter of S.

Example 4: Mohan is the Son of Arun's Father's sister. Prakash is the son of Reva, who is the mother of Vikas and Grandmother of Arun. Pranab is the father of Neela and the grandfather of Mohan. Reva is the wife of Pranab. How is the wife of Vikas related to the neela? 
(a) Sister 
(b) Sister-In-Law 
(c) Niece 
(d) None of The Above
Ans: (b)
Explanation:
As the diagram shows that Vikas is Neela's brother so wife of Vikas will be Neela's Sister - in - Law.

Example 5: Pinky, who is Victor's daughter, say to Lucy, "Your Mother Rosy is the younger sister of my Father, who is the third child of Joseph." How is Joseph related to Lucy? 
(a) Father - In - Law 
(b) Father 
(c) Maternal Uncle 
(d) Grand Father
Ans: (d)
Explanation:
Joseph has three children, One is X, second is Victor and Third is Rosy. It is not clear X is male or female. Rosy is the mother of Lucy so Joseph is the grandfather of Lucy that is clearly shown in the above diagram.