JEE Main 22 July 2021 Shift 2 Solved Paper

Section: Mathematics

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Question : 71 of 90

Marks: +1, -0

Which of the following Boolean expressions is not a tautology?

[22 Jul 2021 Shift 2]

(p⇒q)∨(∼q⇒p)
(q⇒p)∨(∼q⇒p)
(p⇒∼q)∨(∼q⇒p)
(∼p⇒q)∨(∼q⇒p)

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