CTET 2 Math and Science Jul 2019 Paper

Question : 42 of 120

Marks: +1, -0

To prove that

√2

is an irrational number, a teacher begins by assuming that it is a rational number and then proceeds to show how this assumption is not feasible. This is an example of proof by:

Deduction
Contradiction
Verification
Induction

Validate

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