‘A + B’ means ‘A is the brother of B’.
‘A – B’ means ‘A is the daughter of B’.
‘A × B’ means ‘A is the sister of B’.
‘A ÷ B’ means ‘A is the mother of B’.
Which of the following expressions means that T is the niece of W?
Answer & explanation
Correct answer: option 1
The correct answer is Option (1) → T × V – U + W
A niece is the daughter of one’s brother or sister. Look for the expression in which T is a daughter of a brother or sister of W.
T × V: T is the sister of V, so T is a female
V – U: V is the daughter of U, so T is also a daughter of U
U + W: U is the brother of W
T is the daughter of W’s brother U: T is the niece of W
Why the other options are incorrect
Option (2) T – U ÷ V + W — Incorrect. U ÷ V and V + W make U the mother of W, and T is U’s daughter, so T is W’s sister.
Option (3) T + U – V × W — Incorrect. T + U makes T the brother of U, so T is a male and cannot be a niece.
Option (4) T × V – U ÷ W — Incorrect. U ÷ W makes U the mother of W, and T is U’s daughter, so T is W’s sister.