‘A + B’ means ‘A is the sister of B’.
‘A – B’ means ‘A is the father of B’.
‘A × B’ means ‘A is the daughter of B’.
‘A ÷ B’ means ‘A is the mother of B’.
Which of the following expressions shows that K is the paternal aunt of L?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → K + N + M – L
A paternal aunt is the sister of one’s father. Look for the expression in which K is a sister of L’s father.
K + N: K is the sister of N
N + M: N is the sister of M, so K is also M’s sister
M – L: M is the father of L
K is the sister of L’s father M: K is the paternal aunt of L
Why the other options are incorrect
Option (1) K + N – M – L — Incorrect. N – M makes N the father of M, so K is the sister of L’s grandfather N, not of L’s father.
Option (3) K + N + M ÷ L — Incorrect. M ÷ L makes M the mother of L, so K is the sister of L’s mother: a maternal aunt.
Option (4) K × N + M – L — Incorrect. K × N makes K the daughter of N, and N is the sister of L’s father M, so K is L’s cousin.