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Question

To prove "" All prime numbers are not odd." we showed that "2 is even and prime"
This method is

A
The Direct method.
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B
The proof by contradiction.
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C
Induction method.
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D
The proof by giving counter example.
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Solution

The correct option is A The proof by giving counter example.
counterexample is a special kind of example that disproves a statement or proposition.hence it disproves that all prime numbers are odd hence it is proof by counter example
D


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