If a statement is made on several numbers or objects and it is untrue, we can easily disprove (i.e. prove that it is false) by using a counterexample. If we show that the claim does not hold for any one of numbers or objects, our job is done.
This method also help us in solving some questions in competitive exams like JEE. How? Watch the video till end. Don’t forget to subscribe the channel and comment your views.