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Study Notes Based on Blood Relation





04. Pointing to a woman in a photograph, a man says, “She is the mother-in-law of the husband of the only granddaughter of my own mother-in-law”. How is the woman related to the man?
(1) daughter
(2) wife
(3) sister-in-law
(4) Niece
(5) daughter-in-law

Solution. (3) The only granddaughter of the man’s own mother-in-law means the daughter of the man’s brother-in-law.
Now, the daughter’s husband’s mother-in-law means wife of the man’s brother-in-law. Hence, the woman is man’s sister-in-law

05. Introducing a man, a woman says, “His wife is the only daughter of my father.” How is the man related to the woman?
(1) Brother
(2) Father-in-law
(3) Maternal uncle
(4) Paternal uncle
(5) None of these

Solution. (5) The only daughter of the woman’s father is the woman herself. Therefore, the man is the husband of the woman.

06. Pointing towards a girl, a teacher said, “She is the only daughter of the only son of the wife of the father-in-law of my wife”. How is the girl related with the teacher?
(1) Daughter
(2) Niece
(3) Sister
(4) Daughter-in-law
(5) None of these

Solution. (1) The wife of the father-in-law of the person’s wife > the mother of the person.
Now, the only son of the person’s mother is the person himself.
Hence, the girl is the person’s only daughter.

07. Two persons were quarrelling over their relationship with a man in a photo. One was saying that the man was his grandfather, and another was also saying the same. But they were not brothers. What was the relationship between them?
(1) Brother and sister
(2) One of them was lying
(3) Cousins
(4) Data inadequate
(5) None of these

Solution. (4) Here, how many sons and daughters the man in the photo has is not clear. Therefore we can’t reach a definite conclusion.

08. Pointing to a photograph, a man said to a woman, “She is one of the sisters of the son of the only son of your grandfather.” If the woman in the photograph is the sister of the son of the man’s father-in-law, then how is the man related to the woman (with whom the man was talking)?
(1) Husband
(2) Brother
(3) Brother-in-law
(4) Either (1) or (3)
(5) None of these

Solution. (4) “The son of the only son of woman’s grandfather” > the brother of the woman. Hence the woman in the photograph is the woman’s sister or the woman herself with whom the man is talking.  Again “the sister of the son of man’s father-in-law” > either wife or sister-in-law of the man. Still we are uncertain that who is the wife of the man but it is certain that the man is either husband or brother-in-law of the woman.