What is Blood Relation ?
Blood relation is defined as a relation with any person by birth, like our relation with brother, sister, cousin etc. Blood relation shows the different relations among the members of a family. Here, we need to analyse the information showing the blood relation among various members of a family. a chain of information related to various relationships is given, on the basis of the given information, the relation between any two members is to be determined.
Some Common Relations
| Relationship | Term Used |
|---|---|
| Father’s Son or Mother’s Son | Brother |
| Father’s Daughter or Mother’s Daughter | Sister |
| Mother’s Brother (younger or elder) | Maternal Uncle |
| Father’s Brother (younger or elder) | Uncle (Paternal) |
| Father’s Sister (younger or elder) | Aunt |
| Mother’s Sister (younger or elder) | Aunt |
| Son’s Wife | Daughter-in-law |
| Daughter’s Husband | Son-in-law |
| Sister’s Husband | Brother-in-law |
| Husband’s Brother or Wife’s Brother | Brother-in-law |
| Brother’s Wife | Sister-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 |
| Brother’s Son or Sister’s Son | Nephew |
| Brother’s Daughter or Sister’s Daughter | Niece |
| Uncle’s or Aunt’s Son / Daughter | Cousin |
| Father’s Father or Mother’s Father | Grandfather |
| Father’s Mother or Mother’s Mother | Grandmother |
| Father of Grandfather or Father of Grandmother | Great grandfather |
| Mother of Grandfather or Mother of Grandmother | Great grandmother |
Important Symbols
| ⊕ | Male |
| ⊖ | Female |
| — | Same generation ( Horizontal ) |
| | | Generation gap ( Vertical ) |
| ⊕ | ⊕ | Father-Son |
| ⊕ | ⊖ | Father-Daughter |
| ⊖ | ⊕ | Mother-Son |
| ⊖ | ⊖ | Mother-Daughter |
| ⊕ ↔ ⊖ or ⊕ x ⊖ | Husband-Wife |
| ⊕ – ⊕ | Brothers |
| ⊖ – ⊖ | Sisters |
| ⊕ – ⊖ | Brother-Sister |
Types Of Blood Relations
I. Direct Relations
| Relationship | Term used |
|---|---|
| Your’s Father’s or Mother’s Son | Brother |
| Yours’s Father’s or Mother’s Daughter | Sister |
| Yours’s Father’s or Mother’s Father | Grand-Father |
| Yours’s Father’s or Mother’s Mother | Grand-Mother |
| Yours’s Father’s or Mother’s Sister | Aunt |
| Yours’s Father’s or Mother’s Brother | Uncle |
| Yours’s Uncle’s or Aunt’s Son/Daughter | Cousin Brother/Sister |
| Yours’s Brother’s or Sister’s Son | Nephew |
| Yours’s Brother’s or Sister’s Daughter | Neice |
II. In-direct Relations
| Relationship | Term used |
|---|---|
| Yours’s Husband’s or Wife’s Father | Father-in-Law |
| Yours’s Husband’s or Wife’s Mother | Mother-in-Law |
| Yours’s Husband’s or Wife’s Sister | Sister-in-Law |
| Yours’s Husband’s or Wife’s Brother | Brother-in-Law |
| Yours’s Brother’s Wife | Sister-in-Law |
| Yours’s Sister’s Husband | Brother-in-Law |
| Yours’s Son’s Wife | Daughter-in-Law |
| Yours’s Daughter’s Husband | Son-in-Law |
Simple Representation of Blood Relations Through Symbols
| Relation | Symbol |
|---|---|
| ‘A‘ is the Brother of ‘B‘ → | A+—– B+/- |
| ‘A‘ is the Husband of ‘B‘ → | A+↔ B– or A+ x B– |
| ‘A‘ is the Father of ‘B‘ → | A+ | B+/- |
| ‘A‘ is the Uncle of ‘B‘ → | (+/-) —– A+ | B+/- |
| ‘A‘ is the Cousin of ‘B‘ → | (+/-) —– (+/-) | | B+/- A+/- |
| ‘A‘ is the Father-in-Law of ‘B‘ → | A+ | (+/-) ↔ B+/- |
| ‘A‘ is the Son-in-Law of ‘B‘ → | B+/- | (+/-) ↔ A+ |
| ‘A‘ is the Daughter-in-Law of ‘B‘ → | B+/- | (+/-) ↔ A – |
| A‘ is the Brother-in-Law of ‘B‘ → | A+↔ B– —C+/- A+—C+/-↔ B+/- |
| A‘ is the Sister-in-Law of ‘B‘ → | A –↔ B– —C+/- A –—C+/-↔ B+/- |
Questions Based On Blood Relations
Type 1 : Statement Type
Q1. Pointing towards a boy, a girl says, “He is the only son of my mother’s brother”. How is the girl related to the boy?
| A) Grandmother | B) Mother |
| C) Cousin | D) Aunt |
Ans. C) Cousin , Because your Uncle’s Son is your Cousin
Q2. Introducing a man, a woman said, ‘He is the only son of my mother’s mother.” How is the woman related to the man ?
| A) Mother | B) Aunt |
| C) Sister | D) Niece |
Ans. D) Neice Because, My mother’s mother — My grandmother: My grandmother’s only son — My maternal uncle. So, the woman is man’s niece.
Q3. A man said to a lady, “Your mother’s husband’s sister is my aunt!! How is the lady related to the man ?
| A) Daughter | B) Grand daughter |
| C) Mother | D) Sister |
Ans. D) Sister, Because, Your mother’s husband — Your father; Your father’s sister — Your aunt. So, the lady’s aunt is man’s aunt and therefore the lady is man’s sister.
Q4. Pointing Towards a man a woman said, “His wife is, the only daughter of my father.” How is the Man related to the woman ?
| A) Sister-in-law | B) Wife |
| C) Sister | D) Niece |
Ans. B) Wife Because, Woman’s father’s Only Daughter is the Woman herself. And she is the wife of the Man. So the Man is her Husband.
Type 2 : Puzzle Type Blood Relations
Q1. There are six persons A. B, C, D, E and F. C is the sister of F. B is the brother of E’s husband. D is the father of A and grandfather of F. There are two fathers, three brothers and a mother in the group. Who is the mother ?
| A) A | B) B |
| C) C | D) E |
Ans. D) E Because, D is father of A and grandfather of F. So, A is father of F. Thus. D and A are the two fathers. C is the sister of F So. C is the daughter of A. Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F. So, B is brother of A There are three brothers. So. F is the brother of C. Clearly, A is E’s Husband.
Q2. A, B, C, D, E, F and G are members of a family consisting of four adults and three children, two of whom, F and G are girls. A and D are brothers and A is a doctor. E is an engineer married to one of the brothers and has two children. if is married to D and G is their child. Who is C ?
| A) A’s son | B) E’s daughter |
| C) F’s father | D) G’s brother |
Ans. A) A’s Son Because, E is married to A or D. But B is married to D. Thus, E is married to A. Thus, A, B, C, D, E are the four adults and C, F, G are the three children in the family. B and D have a child G. A and E have two children. They are C and F Now. only F and G are girls. So, C is a boy. Thus, C is A’s or E’s son.
