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JEE Main 202311 AprilEvening Shift
Exam
JEE Main
Year
2023
Date
11 April
Shift
Evening Shift
Subject
Mathematics
Chapter
Mathematical Reasoning

JEE Main 2023 · 11 April · Evening Shift · Mathematics · Mathematical Reasoning

The converse of ((~ p) ∧ q) ⇒ r is

The converse of (( p)∧q)⇒r\left(\left(~ p\right) ∧ q\right) ⇒ r is

Options

  1. A(( p)∨q)⇒r\left(\left(~ p\right) ∨ q\right) ⇒ r
  2. B( r)⇒p∧q\left(~ r\right) ⇒ p ∧ q
  3. C( r)⇒(( p)∧q)\left(~ r\right) ⇒ \left(\left(~ p\right) ∧ q\right)
  4. D(p∨( q))⇒( r)\left(p ∨ \left(~ q\right)\right) ⇒ \left(~ r\right)

Correct answer

D. (p∨( q))⇒( r)\left(p ∨ \left(~ q\right)\right) ⇒ \left(~ r\right)

Step-by-step solution

We know that,

Converse of A⇒BA ⇒ B is B⇒AB ⇒ A

So, using the above formula we get,

Converse of \left(~ p ∧ q\right) ⇒ r</p><p></p><p>≡ r ⇒ ( ~ p ∧ q )</p><p></p><p>≡ \left(~ r\right) ∨ \left(~ p ∧ q\right)</p><p></p><p>≡ \left(~ p ∧ q\right) ∨ \left(~ r\right)</p><p></p><p>≡ ~ \left(p ∨ ~ q\right) ∨ \left(~ r\right)\left\{\text{as} ~ \left(A ∨ B\right) ≡ ~ A ∧ ~ B\right\}</p><p></p><p>≡ \left(p ∨ \left(~ q\right)\right) ⇒ \left(~ r\right)

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