JEE Main 2021 — Mathematical Reasoning Question with Solution
From: JEE Main 2021 (Online) 18th March Evening Shift
Question
If P and Q are two statements, then which of the following compound statement is a tautology?
Choose an option
Show full solutionCorrect option: D
Correct answer
D((P Q) Q) P
Step-by-step explanation
LHS of all the options are same i.e.
(A)
Tautology
(B)
(C)
Tautology
(D)
Tautology
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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.