Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Let 
be such that 
is a tautology. Then (p 
q) 
r is logically equivalent to :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Case-I If 
it can be false if r is false, so not a tautology
Case-II If 
tautology
then 
Case-III if 
then 
Not a tautology
(Check p 
T, q 
T, r 
F)
Case-IV if 
Not a tautology
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