Question

What is counterexample? Explain how counter example helps in problem solving?

Answer 1

Counter example:

A counterexample is a particular case which displays that a general declaration is false.

How counter example used to solve problems:

                   Counterexamples are often used to prove the limitations of possible theorems. By using counterexamples to display that definite estimations are false, mathematical researchers avoid going down blind paths and learn how to modify estimations to produce demonstrable theorems.

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