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JEE Main 202225 JuneEvening Shift
Exam
JEE Main
Year
2022
Date
25 June
Shift
Evening Shift
Subject
Mathematics
Chapter
Mathematical Reasoning

JEE Main 2022 · 25 June · Evening Shift · Mathematics · Mathematical Reasoning

The negation of the Boolean expression ((~ q) ∧ p) ⇒ ( (~ p) ∨ q)...

The negation of the Boolean expression \left(\left(~ q\right) ∧ p\right) ⇒ \left(\left(~ p\right) ∨ q\right) is logically equivalent to

Options

  1. Ap⇒qp ⇒ q
  2. Bq⇒pq ⇒ p
  3. C (p⇒q)~ \left(p ⇒ q\right)
  4. D (q⇒p)~ \left(q ⇒ p\right)

Correct answer

C.  (p⇒q)~ \left(p ⇒ q\right)

Step-by-step solution

To find negation of (( q∧p)→(( p)∨q)\left(( ~ q ∧ p\right) \to \left(\left(~ p\right) ∨ q\right)

Let  q∧p=A~ q ∧ p = A &  p∨q=B~ p ∨ q = B

 (A→B)~ \left(A \to B\right)= ~ \left(~ A ∨ B\right)=A∧ B= A ∧ ~ B

Using above formula be get

\left(~ q ∧ p\right) ∧ ~ \left(~ p ∨ q\right)=( q∧p)∧(p∧ q)= \left(~ q ∧ p\right) ∧ \left(p ∧ ~ q\right)

=A∧A= A ∧ A =A= q∧p= A = ~ q ∧ p =p∧ q= p ∧ ~ q or ~ \left(p \to q\right)

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