First slide

Introduction to mathematical reasoning

Question

The proposition $S : (p \Rightarrow q) \Leftrightarrow (~ p \lor q)$ is

Easy

A

a tautology
B

a contradiction
C

either (a) or (b)
D

neither (a) nor (b)

Solution

Since, all values of, given proposition is true, hence it is a tautology.

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