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AMU MCA Previous Year Questions (PYQs)

AMU MCA Blood Relation PYQ

AMU MCA PYQ
If ‘A $ B’ means ‘A is the father of B’, ‘A * B’ means ‘A is the mother of B’, ‘A @ B’ means ‘A is the wife of B’, then which of the following means ‘M is the grandmother of N’?





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AMU MCA Previous Year PYQ AMU MCA AMU MCA 2024 PYQ

Solution

M * T ⇒ M is mother of T

T $ R ⇒ T is father of R
So M is grandmother of R ✅

R @ N ⇒ R is wife of N (female), so N is husband of R
This does not make R parent of N. ❌

Check (d) M * R @ T @ N

M * R ⇒ M is mother of R

R @ T ⇒ R is wife of T (so T is husband of R)

T @ N ⇒ T is wife of N (impossible here: T already husband in previous step) ❌

Check (c) M $ R $ T @ N

M $ R ⇒ M is father of R (male) ❌ (grandmother must be female)

So only valid form is (a): M * T $ N @ R

M * T ⇒ M is mother of T

T $ N ⇒ T is father of N
So M is grandmother of N ✅
(Last part “N @ R” just adds N is wife of R, doesn’t break grandmother relation)
AMU MCA PYQ
If ‘P F Q’ means ‘P is father of Q’; ‘P M Q’ means ‘P is mother of Q’; ‘P S Q’ means ‘P is sister of Q’, then how is D related to N in ‘N M A F B S D’?





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AMU MCA Previous Year PYQ AMU MCA AMU MCA 2024 PYQ

Solution

M A → N is mother of A

A F B → A is father of B

B S D → B is sister of D
AMU MCA PYQ
Pointing to a gentleman, Deepak said, “His only brother is the father of my daughter’s father.” How is the gentleman related to Deepak?





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AMU MCA Previous Year PYQ AMU MCA AMU MCA 2024 PYQ

Solution

“My daughter’s father” = Deepak.
So “father of my daughter’s father” = Deepak’s father.
Gentleman’s only brother = father of Deepak = Deepak’s father.
So gentleman is brother of Deepak’s father = Deepak’s uncle.

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