In Blood Relations, certain information is given about the members of the family in the question, Based on that information we need to find out the relationship between a particular member of the family. Generally, the question deals with a hierarchical structure which is based on seven generation three above & three below like this:
Important Blood Relations
| Father of grandfather or grandmother | Great grandfather | Daughter of father or mother | Sister |
| Mother of grandfather or grandmother | Great grandmother | Son of second wife of father | Step brother |
| Father of father or mother | Grandfather | Daughter of second wife of father | Step sister |
| Mother of father or mother | Grandmother | Son/daughter of uncle/aunt | Cousin |
| Wife of grandfather | Grandmother | Brother of husband or wife | Brother-in-law |
| Husband of grandmother | Grandfather | Sister of husband or wife | Sister-in-law |
| Father-in-law of father/mother | Grandfather | Husband of sister/sister-in-law | Brother-in-law |
| Mother-in-law of father/mother | Grandmother | Son of father | Oneself/Brother |
| Father’s father/mother only | Father | Mother of son/daughter | Oneself/Wife |
| Only daughter-in-law of father’s father/father’s mother | Mother | Father of daughter/son | Oneself/husband |
| Husband of mother | Father | Son of son of grandmother/grandfather | Brother/Oneself /Cousin |
| Wife of father | Mother | Daughter of son of grandmother/grandfather | Cousin/Oneself /Sister |
| Second wife of father | Step mother | Son of brother or sister | Nephew |
| Brother of father | Uncle | Daughter of brother/sister | Niece |
| Brother of mother | Maternal Uncle | Grandson of father/mother | Son/Nephew |
| Sister of father | Aunt | Granddaughter of father/mother | Daughter or Niece |
| Sister of mother | Maternal Aunt | Husband of daughter | Son-in-law |
| Husband of aunt | Uncle | Wife of brother/brother-in-law | Sister-in-law |
| Wife of uncle | Aunt | Wife of son | Daughter-in-law |
| Son of grandfather/grandmother | Father/Uncle | Son of son/Daughter | Grandson |
| Daughter of father-in-law/mother-in-law of father | Mother/Aunt | Daughter of son/Daughter | Granddaughter |
| Father of wife/husband | Father-in-law | Son’s/Daughter’s grandson | Great Grandson |
| Mother of wife/husband | Mother-in-law | Son’s/Daughter’s granddaughter | Great granddaughter |
| Children of same parents | Siblings | ||
| Father’s/Mother’s only son/daughter | Oneself | ||
| Son of father or mother | Brother |
Representation through diagram
| ⊕ │ ⊕ | Father-Son |
| ⊕ │ ϴ | Father-Daughter |
| ϴ │ ⊕ | Mother-Son |
| ϴ │ ϴ | Mother-Daughter |
#Types
- Based on Dialogue or Conversation
- Based on Puzzles
- Based on Symbolically Coded
# Conversation or Dialogue
In this type of question.the one person talking to or doing chit -chat with other person giving information throw pointing to some picture or person.
Madhu said, pointing to Shreya, " His mother is my mother's only daughter".How Madhu is related to Shreya?
a) Father b) Son c) Grandson d) Mother e) None of these
Pointing to a man in a photograph, a man said to a woman, "His mother is the only daughter of your father".How is the woman related to the man in the photograph?
a)Sister b) Mother c) Wife d) Daughter e) None of these
# Based on Puzzles
In this type of question ,You have to conclude the relation between two given person based on more than one information given in the question.
Example:
Direction:
A is the mother of B. B is the sister of C. D is the son of C. E is the brother of D. F is the mother of E. G is the granddaughter of A. H has only two children B and C.
Q1. How F related to H?
a) Son-in-law
b) Daughter-in-law
c) Father-in-law
d)Granddaughter
e) Cannot be determined
Q2. How is C related to E?
a)Father
b) Son
c) Mother
d) Cousin brother
e) Cannot be determined
Q3. Who is the mother of G?
a) C
b) B
c) F
d) Either B or F
e) Either C or F
Solution
(1)
Sol: Option (b)
From the above diagram it is clear that F is daughter-in-law of H.
(2)
Sol: Option (a)
From the above diagram.It is clear that C is father of E.
(3)
Sol: Option (b)
From the above diagram it is clear that B is mother of G.
# Symbols
In this type of question information are coded in the form of ∆#$%&*÷+ etc,..
Direction:
Read the following information carefully and then answer the question given below.
a)A∆B means A is mother of B
b) A $B means A is sister of B
c) A*B means A is father of B
d) A #B means A is brother of B
Q1. Which of the following means R is uncle of T?
a) R*P#S∆Q$T b)S*P#R*U#T c) P*R#Q$S*T d)P*R$Q$S*T e) None of these
q2. Which of the following means L is paternal grandfather of O ?
a) L*R$M#K#O b)R*L∆P#K$O c) L*M∆R*K#O d) L*R#M*K#O e) None of these
Solution
