what is tautology?give examples.
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In logic, a tautology is a formula or assertion that is true in every possible interpretation.
An example of a tautology is " or".
A less abstract example is "The ball is green or the ball is not green".
It is either one or the other - it cannot be both and there are no other possibilities
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Tautology is an expression or phrase that says the same thing twice just in a different way.
EX.- The dog is either brown or the dog is not brown.
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