1. K + Y + Z - I
  2. K + Y x I - Z
  3. Z - I x Y + K
  4. K x Y + I - Z

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Answer: Option 2

K + Y → K is the brother of Y Y x I → Y is the father of I Hence, → K is the uncle of I and I - Z → I is the sister of Z Hence, → I is the niece of K.

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