ISRO exam 2017 – Question 22 with Solution
In this video we are going to discuss another question which was asked in the exam of ISRO.
Q.22 Which one of the following Boolean expressions is NOT a tautology?
- ((a → b) ∧ (b → c)) → (a → c)
- (a ↔ c) →( ¬b → (a ∧ c))
- (a ∧ b ∧ c) → (c ∨ a)
- a → (b → a)
