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The statement pattern p~pq is

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Important Questions on Mathematical Logic

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The negation of nN,n+7>6 is ….
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The negation of the statement : "Getting above 95% marks is necessary condition for Hema to get the admission in good college".
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The statement pattern (pq) is logically equivalent to
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Which of the following statement pattern is a tautology?

S1~qpq

S2ppqq

S3pq~p~q

S4pqr

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Which of the following statement pattern is a tautology?

S1~pqp

S2~p~q

S3(pq)qp

S4qp~pq

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Which of the following statement is contingency?
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Which of the following statement pattern is a tautology?
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The dual of the statement pattern ~pqt is (where t is a tautology and c is a contradiction)