Question

Check whether $21+\sqrt{3}$ are irrational numbers are not?

Answer 1

$21+\sqrt{3}$

$\sqrt{2}=\mathrm{1.4142....},\sqrt{3}=\mathrm{1.7320.....},\pi \mathrm{3.1415.....}$

Here 21 is a rational number but $\sqrt{2}$ is an irrational number

The sum of rational and irrational number is an irrational number

$21+\sqrt{2}=21+\mathrm{1.4142....}=\mathrm{22.4142....}$ is an irrational number