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Question

(pq)(pq) is

A
A contradiction
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B
A tautology
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C
Either (a) or (b)
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D
Neither (a) nor (b)
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Solution

The correct option is A A contradiction
pqpqpqpq(pq)(pq)TTFFFTFTFFTTFFFTTFFTFFFFTFTF
Clearly, (pq)(pq) is a contradiction.

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