Which of the following statement is a ta...

Which of the following statement is a tautology? ` А)((prarrq)^^(~q))rarr(~p)" " B) (prarrq)^^(~q))rarr P " "C)((p rarr q)^^q))rarr(~p) " "D)((prarrq)^^q))rarr p`

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The statement which is not a tautology is (p harr q)[(p rarr q)^^(q rarr q)] b.(p rarr q)vv(sim p rarr q) c.(p^^q)rarr(p vv q)d(p^^q)vv[(p vv q)rarr-q]

The following statement : ( p rarr q ) rarr [ ( p rarr q ) rarr q ] is :

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Which of the following statement is a tautology? ` А)((prarrq)^^(~q))rarr(~p)" " B) (prarrq)^^(~q))rarr P " "C)((p rarr q)^^q))rarr(~p) " "D)((prarrq)^^q))rarr p`

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