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Question

Which of the following boolean expresion is a tautology?

A
(pq)(pq)
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B
(pq)(pq)
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C
(pq)(pq)
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D
(pq)(pq)
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Solution

The correct option is D (pq)(pq)
pqpqpqpq(pq)(pq)TTTTTTFTFTTTTFFTFTFFFFTT

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