‘A + B’ means ‘A is the mother of B’.
‘A – B’ means ‘A is the brother of B’.
‘A × B’ means ‘A is the father of B’.
If L × M – N + O – P, then which of the following statements are correct?
(A) M is the maternal uncle of P.
(B) L is the paternal grandfather of O.
(C) O is the nephew of M.
(D) N is the daughter of L.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → (A), (C) and (D) only
Read the expression one symbol at a time, then test each statement. Brothers and sisters have the same parents.
L × M: L is the father of M
M – N: M is the brother of N, so L is also N’s father
N + O: N is the mother of O, so N is a female
O – P: O is the brother of P, so O is a male and N is also P’s mother
Checking the statements
(A) M is the maternal uncle of P — Correct. M is the brother of P’s mother N.
(B) L is the paternal grandfather of O — Incorrect. L is the father of O’s mother N, so he is O’s maternal grandfather.
(C) O is the nephew of M — Correct. O is a male and the son of M’s sister N.
(D) N is the daughter of L — Correct. N is a female and a child of L.
So only statements (A), (C) and (D) are correct.