1.

Which of the following are De-Morgan’s law$

A. P ∧ (Q v R) Ξ ( P ∧ Q ) v ( P ∧ R )
B. ~(P ∧ R) Ξ ~P v ~R , ~(P v R) Ξ ~P ∧ ~R
C. P v ~P Ξ True , P ∧ ~P Ξ False
D. None of the mentioned
Answer» C. P v ~P ‚âà√≠‚àö¬™ True , P ‚Äö√Ñ√∂‚àö‚Ć‚àö√º ~P ‚âà√≠‚àö¬™ False


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