Jamia Millia Islamia MCA Blood Relation Previous Year Questions (PYQs) – Page 1 of 2
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Showing 15 questions
If A + B means ‘A is the daughter of B’,
A × B means ‘A is the son of B’, and
A − B means ‘A is the wife of B’,
then P × Q − S means:
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Solution
P × Q → P is the son of Q
Q − S → Q is the wife of S
Hence, P is the son of Q and Q is the wife of S ⇒ P is the son of S.
So, S is the father of P.
Looking at a portrait of a man, Sanjay said,
“His mother is the wife of my father’s son. Brothers and sisters I have none.”
At whose portrait was Sanjay looking?
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Solution
Sanjay said — “His mother is the wife of my father’s son.”
→ ‘My father’s son’ = Sanjay himself (since he has no brothers).
Hence, the man’s mother is Sanjay’s wife.
Therefore, the man is Sanjay’s son.
A and B are brothers. C and D are sisters. A’s son is D’s brother.
How is B related to C?
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Solution
If A’s son is D’s brother → D is A’s daughter.
So, C and D are sisters → both daughters of A’s brother (B).
Hence, B is the uncle of C.
Bantu is the brother of Chetna, who has another brother Arun.
Deepak is the husband of Chetna, and Arun is the son of Rita.
Thus, Rita is the _____ of Deepak.
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Solution
Arun is Rita’s son $\Rightarrow$ Rita is mother of Arun.
Arun and Chetna are siblings $\Rightarrow$ Rita is also mother of Chetna.
Deepak is Chetna’s husband $\Rightarrow$ Rita is Deepak’s mother-in-law.
$\boxed{\text{Answer: (D) Mother-in-Law}}$
If L is the brother of K and K is the friend of M, then in the inference 'L is the friend of M' is:
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Solution
Friendship is not a transitive relation, i.e., if K is a friend of M and L is K’s brother, it does not imply L is a friend of M.
Hence, the statement can be true or false depending on context.
$\boxed{\text{Answer: (C) probably false or true}}$
M has a son Q and a daughter R. He has no other child. E is mother of P and daughter in law of M. How is P is related to M?
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Solution
P is grand child of M.
Sunil is the son of Kesav. Simran (Kesav’s sister) has a son Maruti and daughter Sita.
Prem is the maternal uncle of Maruti. How is Sunil related to Maruti?
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Solution
Solution:
Sunil = son of Kesav; Maruti = son of Simran (Kesav’s sister). Children of siblings → cousins.
Pointing to a girl in a 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?
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Solution
Amar’s mother’s father = Amar’s maternal grandfather.
His only son = Amar’s maternal uncle.
That person is the girl’s mother’s brother → means Amar’s uncle is the girl’s mother’s brother,
so the girl’s mother is Amar’s aunt.
A is the son of B. C, B’s sister, has a son D and a daughter E.
F is the maternal uncle of D.
How is E related to F?
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Solution
B’s sister is C. C’s son is D and daughter is E.
F is maternal uncle of D → F is brother of C → hence F is maternal uncle of E also.
Therefore, E is niece of F.
If A+B: “B is brother of A”, A×B: “B is husband of A”,
A−B: “A is mother of B”, A%B: “A is father of B”.
Which shows Q is grandmother of T?
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Solution
Q−P ⇒ Q mother of P; P+R ⇒ R brother of P ⇒ Q mother of R;
R%T ⇒ R father of T. Thus Q is mother of (father of T) ⇒ grandmother.
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