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| Q.5 | ‘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’? | |
| Ans | 1. S ∞ H ≡ L ≡ Q ∃ M | |
| 2. Q ∇ M ∃ H ≡ L ∃ S | ||
| 3. M ∃ Q ∆ L ≡ H ∃ S | ||
| 4. M ∃ Q ≡ L ∞ H ∇ S |
Correct Ans Provided: 4
