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Symbolic relations: Identify the chain that shows I is the niece of K. Operator meanings: P + Q ⇒ P is the brother of Q P x Q ⇒ P is the father of Q P - Q ⇒ P is the sister of Q Choose the expression that guarantees I is K’s niece (female child of K’s sibling).

Q: Symbolic relations: Identify the chain that shows I is the niece of K. Operator meanings: P + Q ⇒ P is the brother of Q P x Q ⇒ P is the father of Q P - Q ⇒ P is the sister of Q Choose the expression that guarantees I is K’s niece (female child of…

Decode option (b) K + Y ⇒ K is brother of Y (siblings). Y x I ⇒ Y is father of I ⇒ I is child of K's brother. I - Z ⇒ I is sister of Z ⇒ I is female. Conclusion I is the niece of K. Other options do not secure both parentage and female gender.

Difficulty: Medium

K + Y + Z - I
K + Y x I - Z
Z - I x Y + K
K x Y + I - Z

Correct Answer: K + Y x I - Z

Explanation:

Decode option (b)
K + Y ⇒ K is brother of Y (siblings). Y x I ⇒ Y is father of I ⇒ I is child of K's brother. I - Z ⇒ I is sister of Z ⇒ I is female.

Conclusion
I is the niece of K. Other options do not secure both parentage and female gender.

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