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Which one of the following is not true?...

Which one of the following is not true?

A

Negation of a negation of a statement is the statement itself.

B

If the last column of the truth table contains only T then it is a tautology.

C

If the last column of its truth table contains only F then it is a contradiction

D

If p and q are any two statements then `p ltimplies q` is a tautology.

Text Solution

Verified by Experts

The correct Answer is:
D
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