Question

Which of the following is not a rational number which of the following is not a rational number square 2 square 4 square 9 square 16

Answer 1

square 2 is not rational number

Answer 2

Answer:

$\sqrt{2}$ is not a rational number

$\sqrt{4}$ gives 2 which is rational

$\sqrt{9}$ gives 3 which is rational

$\sqrt{16}$ gives 4 which is also rational

hence $\sqrt{2}$ is the only number above which is irrational

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