|1||Grandfather’s son||Father or Uncle|
|2||Grandmother’s son||Father or Uncle|
|3||Grandfather’s only son||Father|
|4||Grandmother’s only son||Father|
|5||Mother’s or father’s mother||Grandmother|
|8||Husband’s or wife’s sister||Sister-in-Law|
|11||Uncle or aunt’s son or daughter||Cousin|
|14||Grandson’s or grand daughter’s daughter||Great grand Daughter|
The efficiency in doing the problems of blood relations depends upon the knowledge of the blood relations. Some of the important relations are given below:
Q.1. A is B’s daughter, B is C’s mother. D is C’s brother. How is D related to A?
A and C are both daughters of B. D being the brother of C he is also a brother of A
Q.2. P is Q’s brother. R is Q’s mother. S is R’s father. T is S’s mother. How is P related to T
P is the brother of Q. Therefore, P is a male. R is the mother of P and Q and R are daughters of S. S is the son of T. S is the grandfather of P. Therefore, P is the great-grandson of T.
Q.3. A is B’s brother. C is D’s father. E is B’s mother. A and D are brothers. How is E related to C?
C is the father of A, B and D.
E is the mother of A, B and D.
Therefore, E is the wife of C.
(i) A and D are brothers of D
(ii) C is the father of A, B and D
(iii) C is the mother of A, B and D
(iv) E is wife of C
Q.4. A is the sister of B. B is the brother of C. C is the son of D. How is D related to A?
As per the question, A is the sister of B and C whereas D is the father or mother of A, B and C. Therefore, D is the mother of B.
Q.5. B is the brother of A. whose only sister is mother of C. D is maternal grandmother of C. How is A related to D?
Although sex of A is not mentioned clearly in the question. On the basis of information given is A is daughter of B.
Q.6. A and B are sisters. R and S are brothers. A’s daughter is R’s sister. What is B’s relation to S?
A and B are sisters.
A's daughter is R's sister hence she is S's sister also.
Then A has three children one daughter and two sons (R and S).
Hence, B is the aunt of S.
Q.7. E is the sister of B. A is the father of C. B is the son of C. How is A related to E?
A is father of C, who is father of B that means A is Grandfather of B E is B’s sister, so A is also Grand father of E.
Q.8. Given that:
A is the mother of B.
C is the son of A.
D is the brother of E.
E is the daughter of B.
Who is grandmother of D?
E is the daughter of B and D is brother of E. Therefore, D is son of B and A is mother of B. Thus, A is grandmother of D.
Q.9. A is D’ brother. D is B’s father. B and C are sisters. How is A related to C?
B and C daughters of D .
A is brother of D .
Therefore A is uncle of C.
Q.10. A is B’s sister. C is B’s mother. D is C’s father. E is D’s mother, then how A is related to D?
From the information given, it can be concluded:
A is B's sister and their mother is C.
D is their grandfather and E is their great-grandmother.
So, A is the granddaughter of A.
Q.11. (i) F is the brother of A.
(ii) G is the daughter of A.
(iii) K is the sister of F.
(iv) G is the brother of C.
Who is the uncle of G?
G ⇒ brother of C.
C ⇒ daughter of A.
So, G ⇒ son of A.
F ⇒ brother of A.
Therefore, F is the uncle of G.
Q.12. A is father of C and D is son of B. E is brother of A. If C is sister of D, how is B related to E?
A is father of C and C is sister of D. So, A is father of D. But D is son of B. So, B is the mother of D and wife of A. Also, E is the brother of A. So, B is the sister-in-law of E.
Q.13. C is wife of B. E is the son of C, A is the brother of B and father of D. What is the relationship of E to D?
E is B and C.
A is uncle of E and Father of D.
Therefore E is cousin of D.
Q.14. M is the son of P. Q is the grand-daughter of O, who is the husband of P. How is M related to O?
O is the Husband of P. M is the son of P.
Therefore, M is son of O.
Q.15. X and Y are brothers. R is the father of Y. S is the brother of T and maternal uncle of X. What is T to R?
R is the father of Y and X.
S is the maternal uncle of X and Y.
So, T is the mother of X and Y.
Thus, T is the wife of R.