Q

# Classify the following numbers as rational or irrational: (i) square root 23

9. Classify the following numbers as rational or irrational :

(i)      $\sqrt{23}$

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We can rewrite $\sqrt{23}$ in decimal form as

$\Rightarrow \sqrt{23} = 4.7958152....$

Now, as the decimal expansion of this number is non-terminating non-recurring.

Therefore, it is an irrational number.

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