JEE Main 2021MathematicsMathematical ReasoningEasyMCQ

JEE Main 2021Mathematical Reasoning Question with Solution

JEE Main 2021 (27 Aug Shift 2)

Question

The Boolean expression (pq)rqp is equivalent to:

Choose an option

Show full solutionCorrect option: C
Correct answer
C(pq)(rq)

Step-by-step explanation

(pq)((rq)p)(pq)(r(pq)).(i)

Case: I when pq=T and r=F

Statement-(i) is false as well as option (3) is also false
option (1), option (2) are True so given expression is not equivalent to option (1), option (2)

option (4) may be true if we consider q=T option (4) is also not equivalent to option (1) Case : II pq=False

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About this question

This is a previous-year question from JEE Main 2021, covering the Mathematical Reasoning chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.