The Boolean expression ~(p ⇒ (~q)) is equivalent to:

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JEE Mains Previous Paper 1 (Held On: 12 Apr 2019 Shift 2)
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  1. p ∧ q
  2. q ⇒ ~p
  3. p ∨ q
  4. (~p) ⇒ q

Answer (Detailed Solution Below)

Option 1 : p ∧ q
Free
JEE Main 04 April 2024 Shift 1
90 Qs. 300 Marks 180 Mins

Detailed Solution

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From question, the Boolean expression given is:

~(p ⇒ (~q))

The truth table for the above expression is given below:

p

q

~q

P ⇒ (~q)

~(p ⇒ (~q))

T

T

F

F

T

T

F

T

T

F

F

T

F

T

F

F

F

T

T

F

 

Now, we need to consider the options:

Option (a) p ∧ q:

p

q

P ∧ q

T

T

T

T

F

F

F

T

F

F

F

F

 

Option (b) q ⇒ ~p:

p

q

~p

q ⇒ ~p

T

T

F

F

T

F

F

F

F

T

T

T

F

F

T

T

 

Option (c) p ∨ q:

p

q

P ∨ q

T

T

T

T

F

T

F

T

T

F

F

F

 

Option (d) (~p) ⇒ q:

p

q

~p

(~p) ⇒ q

T

T

F

T

T

F

F

T

F

T

T

T

F

F

T

F

 

On comparing the truth values of expression and truth values in options. The truth values in option is same and option (a) is the correct answer.

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