Blood Relations

UPSC CSAT Logical Reasoning

UPSC CSAT Notes with Practice Questions


Table of contents

Relations

Relationship Name of relation
Mother/Father's son Brother
Mother/Father's daughter Sister
Mother/Father's brother Uncle
Mother/Father's sister Aunt
Mother/Father's father Grandfather
Mother/Father's mother Grandmother
Sister/Brother's son Nephew
Sister/Brother's Niece
Uncle/Aunt's child Cousin
Grandchild's child Great grandchild

Mother side relations are called maternal relations whereas father side relations are called paternal relations.


Relationship Name of relation
Son's wife Daughter-in-law
Daughter's husband Son-in-law
Husband/Wife's sister Sister-in-law
Husband/Wife's brother Brother-in-law
Sister's husband Brother-in-law
Brother's wife Sister-in-law

To solve the problems in blood relation, one should know how to draw a family tree. A family tree is a pictorial representation of genealogical data.

How to draw a family tree

  1. All the female members of the family are represented by a circle. The name of the person is written inside the circle for convenience.
  2. All the male members of the family are represented by a square. The name of the person is written inside the square for convenience.
  3. The relation between two members of the family is shown by single line.
  4. The spouse relation is represented by the two ends of a double-headed arrow.
  5. All the family members of the upper generation are represented above in the family tree. Ex: father, mother, uncle, aunt etc. The logic can be extended by representing the grandparents above the parents in the family tree. Ex: grandfather and grandmother.
  6. All the family members of the same generation are represented in the middle of the family tree. Ex: brothers, Sisters, cousins, wife, husband, etc.
  7. All the family members of the next generation are represented below in the family tree. Ex: Daughter, son, niece, nephew.

A sample family tree based on above rules.


Practice Questions

1. A+ B means A is the son of B AND A - B means A is the wife of B. On the basis of the above statement, what does the expression P + R - Q mean? (UPSC 2017)
a. R is father of P
b. P is the wife of R
c. Q is the father of P
d. Q is son of P

2. Rahul's father is the only son of Rohan's Father. How is Rohan's wife related to Rahul?
a. Mother
b. Aunt
c. Grandmother
d. Sister

3. Manoj is the brother of Deepak. Rekha is the sister of Seema. Deepak is the son of Rekha. How is Manoj related to Rekha?
a. Nephew
b. Son
c. Brother
d. None of these

4. Who is the mother of B?
I. P and Q are sisters.
II. Q's husband is the brother of B's husband.

a) Statement I alone is sufficient, but statement II alone is not sufficient
b) Statement II alone is sufficient, but statement I alone is not sufficient
c) Either I or II is sufficient
d) Data in both the statements together are not sufficient

5. P and Q are the married couple. X and Y are sisters. X is the sister of P. How is Y related to Q?
a. Brother
b. Sister
c. Bother-in-law
d. Sister-in-law

6. A is B's brother. C is B's mother. D is C's father. E is D's mother. How is A related to D?
(UPSC 2020)

a. Grandfather
b. Granddaughter
c. Grandmother
d. Daughter

7. A woman introduces a man as the son of the brother of her mother. How is the man related to the woman?
a. Nephew
b. Son
c. Cousin
d. Uncle
e. Grandson

8. 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. E
b. C
c. B
d. A

9. Pointing out to a lady, a girl said, "She is the daughter-in-law of the grandmother of my father's only son." How is the lady related to the girl?
a. Sister-in-law
b. Mother
c. Aunt
d. Can’t be determined

10. Pointing to a lady, a man said, "The son of her only brother is the brother of my wife." How is the lady related to the man?
a. Mother’s sister
b. Grandmother
c. Mother-in-law
d. Sister of father-in-law
e. Maternal aunt

11. A family get-together consisted of grandmother, father, mother, four sons with their wives, one son and two daughters to each of the sons. How many females are there in all?
a. 14
b. 16
c. 18
d. 24

12. B is son of C while C and Q are sisters to one another. Z is the mother of Q. If P is the son of Z, which of the following statement is correct?
a. Q is the grandfather of B
b. P is the maternal uncle of B
c. P is the cousin of B
d. Z is the brother of C

13. Four persons A, B, C and D consisting of two married couples are in a group. Both the women are shorter than their respective husbands. A is the tallest among the four. C is taller than B. D is B's brother. In this context, which one of the following statements is not correct?
(UPSC 2015)

a. All four have family ties
b. B is shortest among the four
c. C is taller than D
d. A is B’s husband

14. A joint family consists of seven members A, B, C, D, E, F and G with three females. G is a widow and sister-in-law of D's father F. B and D are siblings and A is daughter of B. C is cousin of B. Who is E?
1. Wife of F
2. Grandmother of A
3. Aunt of C
Which are correct statements?
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2 and 3

15. Examine the following relationships among members of a family of six persons A, B, C, D, E and F (UPSC 2017)
1 The number of males equals that of females
2 A and E are sons of F
3 D is the mother of two, one boy and one girl
4 B is the son of A
5 There is one married couple in the family at present
Which one of the following is true from the above information?
a. A, B and C are all females
b. A is the husband of D
c. E and F are children of D
d. D is the granddaughter of F

16. A joint family consists of seven members A, B, C, D, E, F and G with three females. G is a widow and sister-in-law of D's father F. B and D are siblings and A is daughter of B. C is cousin of B. Who is E? (UPSC 2019)
1. Wife of F
2. Grandmother of A
3. Aunt of C
Select the correct answer using the code given below:
a. 1 and 2 only b. 2 and 3 only c. 1 and 3 only d. 1, 2 and 3

17. A family of two generations consisting of six members P,Q,R,S,T and U has three males and three females .There are two married couples and two unmarried siblings . U is P's daughter and Q is K's mother-in-law. T is an unmarried male and S is a male. Which one of the following is correct? (UPSC 2020)
a. R is U's husband
b. R is S's wife
c. S is unmarried
d. None of the above

18. Pointing towards a person in a photograph, Anjali said, MHe is the only son of the father of my sister's brother." How is that person related to Aryali?
a. Mother
b. Father
c. Maternal uncle
d. Cousin

19. Consider the Question and two Statements given below:
Question: Is Z brother of X? (UPSC 2022)

Statement-1: X is a brother of Y and Y is a brother of Z.
Statement-2: X, Y and Z are siblings.
Which one of the following is correct in respect of the question and the Statement?
a. Statement-1 alone is sufficient to answer the question
b. Statement-2 alone is sufficient to answer the question
c. Both Statement-1 and statement 2 are sufficient to answer the Question
b. Both Statement-1 and Statement-2 are not sufficient to answer the Question

20. Pointing to a man on the stage, Rita said, "He is the brother of the daughter of the wife of my husband." How is the man on the stage related to Rita?
a. Son
b. Husband
c. Cousin
d. Nephew



For detailed solutions, join -

2. Target CSAT - Oct 2022 Batch from UPSCprep.com
Upgrade to CSAT+GS Basics Combo Course - Click here Coupon for Early Bird Discount (Valid till 5 Oct): TARGETCSATMail us for any queries: contact@upscprep.comWhat you getA. 1 Year of mentoring + 3 months of live classes.B. Topic wise detailed lectures - maths, logical reasoning and comprehensio…
Previous Post

Next Post