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Which of the following is a tautology ?...

Which of the following is a tautology ?

A

`( p rarr q ) ^^ p rarr q `

B

`(p rarr q ) vee p rarr q `

C

`(p rarr q ) vee q rarr p `

D

`( p rarr q ) ^^ ( ~ q ) rarr p `

Text Solution

Verified by Experts

The correct Answer is:
A
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