Blood Relations Questions and Answers : Logical Reasoning


In Blood relation section, the correct answer depends upon the knowledge of the blood relations, 
some of which are summarized below to help solve these tests.

Mother’s or father’s son = Brother

Mother’s or father’s daughter = Sister

Mother’s or father’s brother = Uncle

Mother’s or father’s sister = Aunt

Mother’s or father’s father = Grandfather

Mother’s or father’s mother = Grandmother

Son’s wife = Daughter-in-Law

Daughter’s husband = Son-in-Law

Husband’s or wife’s sister = Sister-in-Law

Husband’s or wife’s brother = Brother-in-Law

Brother’s son = Nephew

Brother’s daughter = Niece

Uncle or aunt’s son or daughter = Cousin

Sister’s husband = Brother-in-Law

Brother’s wife = Sister-in-Law

Grandson’s or Grand daughter’s daughter = Great grand daughter


  • Pointing towards Vaman, Madhav said “I am the only son of his father’s one of the sons.”

    How Vaman is related to Madhav?
    A.) Nephew B.) Uncle
    C.) Either father or uncle D.) Father
    Answer: Option 'C'



  • Pointing to a photograph, Vipul said, "She is the daughter of my grandfather's only son."

    How is Vipul related to the girl in the photograph ?
    A.) Father B.) Brother
    C.) Uncle D.) Cousin
    Answer: Option 'B'

    My grandfather's only son -- My father.

    So, the girl is the daughter of Vipul's father i.e.,

    Vipul is the girl`s brother.



  • Looking at a portrait of a man, Harsh said, "His mother is the wife of my father's son. Brothers

    and sisters I have none." At whose portrait was Harsh looking ?
    A.) His son B.) His nephew
    C.) His uncle D.) His cousin
    Answer: Option 'A'

    Since Harsh has no brother or sister, so he is his father's only son.

    Now, wife of my father's son -- my wife.

    So, Harsh's wife is the man's mother or the man is Harsh's son.



  • Pointing to a girl in the photograph, Amar said, "Her mother`s brother is the only son of my mother's

    father." How is the girl`s mother related to Amar ?
    A.) Mother B.) Sister
    C.) Aunt D.) Grandmother
    Answer: Option 'C'

    Only son of Amar's mother's father -- Amar's maternal uncle.

    So, the girl's maternal uncle is Amar's maternal uncle.

    Thus, the girl's mother is Amar's aunt.



  • A girl introduced a boy as the son of the daughter of the father of her uncle. The boy is girl`s
    A.) Brother B.) Son
    C.) Uncle D.) Son-in-law
    Answer: Option 'A'

    Daughter of uncle's father -- Uncle's sister -- Mother;

    Mother's son -- Brother.



  • If X is the brother of the son of Y`s son, how is X related to Y ?
    A.) Son B.) Brother
    C.) Grandson D.) Cousin
    Answer: Option 'C'

    Son of Y's son -- Grandson;

    Brother of Y's grandson -- Y's granson.



  • Pointing to a women in a photograph a man says “She is the daughter-in-law of the mother of

    my father’s only grand son”. How is he woman related to the man?
    A.) Wife B.) mother
    C.) daughter-in-law D.) daughter
    Answer: Option 'D'



  • Pointing to a man in a photograph a woman said, “His brother’s father is the woman related to

    the man in the photograph?
    A.) Mother B.) Aunt
    C.) Sister D.) Daughter
    Answer: Option 'C'



  • Pointing to a photograph, a woman says, "This man`s son`s sister is my mother-in-law."

    How is the woman`s husband related to the man in the photograph ?
    A.) Grandson B.) Son
    C.) Nephew D.) Son-in-law
    Answer: Option 'A'

    Man's son's sister -- Man's daughter.

    So, the man's daughter is the mother of the woman's husband.

    Thus, the woman's husband is the grandson of the man in the photograph.



  • When Anuj saw Manish, he recalled, "He is the son of the father of my daughter." Who is Manish ?
    A.) Brother-in-law B.) Brother
    C.) Cousin D.) Uncle
    Answer: Option 'A'

    Anuj's daughter's mother -- Anuj's wife;

    Anuj's wife's father -- Anuj's father-in-law;

    Father-in-law's son -- Anuj's brother-in-law.

    So, Manish is Anuj's brother-in-law.



Logical Reasoning Topics

To whom this Blood Relations Question and Answers section is beneficial?

Students can learn and improve on their Cognitive skills and prepare for competitive examinations like...


  • All I.B.P.S and Public Sector Bank Competitive Exam
  • Common Aptitude Test (CAT) Exams
  • UPSC Paper-II or CSAT Exams
  • SSC Competitive Exams
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  • Railway Competitive Exam
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  • Career Aptitude Test (IT Companies) and etc.