Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Engineering Mathematics Mathematical Logic Propositional Equivalence
Consider the statements:
I. A ⇔ A ∨ ~ A
II. A ⇔ A ∨ A
III. A ∨ B ⇒ A
IV. A ⇒ A ∨ B
Which of the above refers to tautologies?
1
I and II
2
I
3
III
4
II and IV
5
Question Not Attempted