Questions  

Which one of the following is a tautology?

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By Expert Faculty of Sri Chaitanya
ctaimg
a
P∨P∧Q
b
Q→P∧P→Q
c
P∧P∨Q
d
P∧P→Q→Q
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detailed solution

Correct option is D

pqp→qp∧(p→q)(p∧(p→q))→qq→p∧(p→q)p∧qp∨(p∧q)p∨qp∧(p∨q)TTTTTTTTTTTFFFTTFTTTFTTFTFFFTFFFTFTTFFFF

ctaimg

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If p is true and q is false, then which of the following statements is NOT true?

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