Mastering Blood Relations: A Simplified Guide with Examples and Frequently Asked Questions

INTRODUCTION

Let us consider a wife and husband are met biologically related but they are biological parents of their own children
Blood relatives are, brother, sister, paternal grand father, paternal grand mother, maternal grand father, maternal grandmother, grandson, grand daughter, niece, cousin etc.
In order to solve these questions one should have an adequate knowledge of blood relations These relations may be divided into two main categories.
Maternal Relations: Relations on the mother's side are called maternal relations.
Paternal Relations: Relations on the father's side are called maternal relations.

Relationship	Term
Mother's sister	Maternal aunt
Father's sister	Paternal aunt
Son of mother (or) father	Brother
Daughter of mother (or) father	Sister
Son of brother or sister	Nephew
Daughter of brother or sister	Niece
Wife of brother	Sister-in-law
Husband of daughter	Son-in-law
Wife of son	Daughter-in-law
Sister of wife or husband	Sister-in-law
Brother of wife or husband	Brother-in-law
Father of father	Paternal grandfather
Father of mother	Maternal grandfather
Mother of father	Paternal grandmother
Mother of mother	Maternal grandmother

Important Notations/Symbols to solve Blood Relation Questions

Given below are some standard symbols and notations, they will help you to solve the questions by expressing the given information in the form of a relation tree.

DECIPHERING JUMBLED UP DESCRIPTIONS

In this type of Relations, a person gives information to the another person either in a photograph or in front of him. Using this information a relation is established to identify the person that has been described.

Introducing a man to her husband, a woman said, " His brother's father is the o son of my grandfather". How is women related to the man" ?

SOLUTION : According to the question
The only son of woman's grandfather will be woman's father, who is the father of man's brother and therefore of man also. Thus, the woman is the sister of that man.

RELATION PUZZLE

In this type of Relations, more than one information in the form of Puzzle is given and based on the information, it is required to deduce the relation between the two individuals which is asked by drawing a family chart.

EXAMPLE: Read the following information carefully to answer the questions that follow.
A family consists of six members P.Q.R.X.Y and Z Qis the son but is not the mother of O P and R are married couple. Y is the brother of R. X is the daughter of P and Z is the brother of P.
Who is the brother - in law of R?
SOLUTION: According to the given information, we can draw a relation diagram is as shown below.
Z is brother - in law of R
Z is brother - in law of R

EXAMPLE: How many female members are there in the family?
A family consists of six members P.Q.R.X.Y and Z Qis the son but is not the mother of O P and R are married couple. Y is the brother of R. X is the daughter of P and Z is the brother of P.
Who is the brother - in law of R?
SOLUTION: According to the given information, we can draw relation diagram is shewn below.
X and P are females
X and P are females

EXAMPLE: Which of these is a pair of brother ?
A family consists of six members P.Q.R.X.Y and Z Qis the son but is not the mother of O P and R are married couple. Y is the brother of R. X is the daughter of P and Z is the brother of P.
SOLUTION: According to the given information, we can draw relation diagram is shewn below
R and Y is the pair of brothers.
R and Y is the pair of brothers.

CODDED RELATIONS

In this type of Relations, certain symbols and codes are used to represent the information in coded form. The candidate is required to decode the information with the help of symbols to be used for making family diagram and then find out the relationship between the persons asked in the question.

Following question based on the information given below
'P x Q' means 'P is father of Q'.
"P-Q' means 'P is sister of Q
'P+ Q means P is mother of Q
P÷ Q means 'P is brother of Q'.
EXAMPLE: In the expression B + D x M ÷ N, how is M related to B?
SOLUTION: B + D x M ÷ N
So M, is grandson of B

Following question based on the information given below
'P x Q' means 'P is father of Q'.
"P-Q' means 'P is sister of Q
'P+ Q means P is mother of Q
P÷ Q means 'P is brother of Q'.
EXAMPLE: Which of the following represents “J is son of F” ?
(A)J ÷ R – T x F
(B)J + R – T x F
(C)J ÷ M – N x F
(D)None
SOLUTION: From option J ÷ R – T x F
So initially it is provided that J is female, since J is the mother of R. So, J cannot be a son of F. From option J ÷ M – N x F
So initially it is provided that J is female, since J is the mother of R. So, J cannot be a son of F. From option J ÷ M – N x F
None of the option shows that J is son of F

Following question based on the information given below
'P x Q' means 'P is father of Q'.
"P-Q' means 'P is sister of Q
'P+ Q means P is mother of Q
P÷ Q means 'P is brother of Q'.
EXAMPLE: which of the following represents R is niece of M?
(A)M ÷ K x T – R
(B)M – J + R – N
(C)R – M x T ÷ W
(D)Cannot be determined
SOLUTION: From option M – J + R – N
So R is niece of M