Difficulty: Medium
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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