'D ≡ G’ means ‘D is the sister of G’.
‘D ∆ G’ means ‘D is the husband of G’.
‘D ∇ G’ means ‘D is the daughter of G’.
‘D ∃ G’ means ‘D is the mother of G’.
‘D ∞ G’ means ‘D is the brother of G’.
Which of the following expressions denotes that ‘S is the husband of M’?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. M ∃ Q ≡ L ∞ H ∇ S.
Option 4) M ∃ Q ≡ L ∞ H ∇ S → M is the mother of Q, Q is the sister of L, L is the brother of H, H is the daughter of S.
Thus, S is the husband of M.