Question

Classify the following numbers as rational or irrational with justification:-3√18​

Answer 1

Answer:

Rational number is a number which can be written in the form p/q, where p and q both are integers.

$3 \sqrt{18}$

3√9×2=3×3√2=9√2.

So it cannot be written in a form p/q, with p, q both integers.

Hence, 3√18 is an irrational number.

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