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|}
 
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(A) $¬Q&#9633¬P$
+
(A) $\neg Q&#9633¬P$
  
 
(B) '''$P&#9633¬Q$'''
 
(B) '''$P&#9633¬Q$'''

Revision as of 19:44, 14 July 2014

The binary operation □ is defined as follows

P Q P□Q
T T T
T F T
F T F
F F T

(A) $\neg Q&#9633¬P$

(B) $P&#9633¬Q$

(C) $¬P&#9633Q$

(D) $¬P&#9633¬Q$

Solution by Happy Mittal

If we compare column of $P□Q$ in table with $P ∨ Q$, we need both F in $3^{rd}$ row of table, and for that we need $¬Q$ instead of $Q$. So $P ∨ Q$ is equivalent to $P&#9633¬Q$, and therefore, option (B) is correct.




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The binary operation □ is defined as follows

P Q P□Q
T T T
T F T
F T F
F F T

(A) $¬Q&#9633¬P$

(B) $P&#9633¬Q$

(C) $¬P&#9633Q$

(D) $¬P&#9633¬Q$

Solution by Happy Mittal[edit]

If we compare column of $P□Q$ in table with $P ∨ Q$, we need both F in $3^{rd}$ row of table, and for that we need $¬Q$ instead of $Q$. So $P ∨ Q$ is equivalent to $P&#9633¬Q$, and therefore, option (B) is correct.




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