First slide

Introduction to mathematical reasoning

Question

The propositions $(p \Rightarrow\sim p) \land (~ p \Rightarrow p)$ is

Easy

A

Tautology and contradiction
B

Neither tautology nor contradiction
C

Contradiction
D

Tautology

Solution

Clearly, $(p \Rightarrow\sim p) \land (~ p \Rightarrow p)$ s a contradiction

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