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JEE Main 202229 JuneEvening Shift
Exam
JEE Main
Year
2022
Date
29 June
Shift
Evening Shift
Subject
Mathematics
Chapter
Mathematical Reasoning

JEE Main 2022 · 29 June · Evening Shift · Mathematics · Mathematical Reasoning

Negation of the Boolean statement (p ∨ q) ⇒ ( (~ r) ∨ p) is...

Negation of the Boolean statement (p∨q)⇒\left(p ∨ q\right) ⇒\left(\left(~ r\right) ∨ p\right) is equivalent to:

Options

  1. Ap∧( q)∧rp ∧ \left(~ q\right) ∧ r
  2. B( p)∧( q)∧r\left(~ p\right) ∧ \left(~ q\right) ∧ r
  3. C( p)∧q∧r\left(~ p\right) ∧ q ∧ r
  4. Dp∧q∧( r)p ∧ q ∧ \left(~ r\right)

Correct answer

C. ( p)∧q∧r\left(~ p\right) ∧ q ∧ r

Step-by-step solution

Given,

p∨q⇒( r∨p)</p><p>p ∨ q ⇒ \left(~ r ∨ p\right)</p><p>≡ ~ \left(p ∨ q\right) ∨ \left(~ r ∨ p\right)

≡( p∧ q)∨(p∨ r)</p><p>≡ \left(~ p ∧ ~ q\right) ∨ \left(p ∨ ~ r\right)</p><p>≡ \left[\left(~ p ∨ p\right) ∧ \left(~ q ∨ p\right)\right] ∨ ~ r</p><p></p><p>≡ \left(~ q ∨ p\right) ∨ ~ r</p><p>Sonegationof( q∨p)</p><p>So negation of \left(~ q ∨ p\right) ∨ ~ risis~ p ∧ q ∧ r.</p>.</p>

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