Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Multiple Choice Questions>Q 17

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The number ${(2 - \sqrt{3})}^{2}$ is

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Important Questions on Rational and Irrational Numbers

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Multiple Choice Questions>Q 18

If x is a positive rational number which  is not a perfect square, then - 5 \sqrt{x} is

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Multiple Choice Questions>Q 19

I f x, y a r e b o t h p o s i t i v e r a t i o n a l n u m b e r s, t h e n (\sqrt{x} + \sqrt{y}) (\sqrt{x} - \sqrt{y}) i s

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Multiple Choice Questions>Q 20

A f t e r r a t i o n a l i z i n g t h e d e n o m i n a t o r o f \frac{7}{3 \sqrt{3} - 2 \sqrt{2}}, w e g e t t h e d e n o m i n a t o r a s

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Multiple Choice Questions>Q 21

T h e n u m b e r o b t a i n e d o n r a t i o n a l i z i n g t h e d e n o m i n a t o r o f \frac{1}{\sqrt{7} - 2} i s

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Chapter Test>Q 1

Without actual division find whether the following rational numbers are terminating decimals or recurring decimals :

$\frac{13}{15}$

In case of terminating write their decimal expressions.

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Chapter Test>Q 1

Without actual division find whether the following rational numbers are terminating decimals or recurring decimals :

$- \frac{5}{56}$

In case of terminating write their decimal expressions.

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Chapter Test>Q 1

Without actual division find whether the following rational numbers are terminating decimals or recurring decimals :

$\frac{7}{125}$

In case of terminating write their decimal expressions.

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Understanding ICSE Mathematics Class 9>Chapter 1 - Rational and Irrational Numbers>Chapter Test>Q 1

Without actual division find whether the following rational numbers are terminating decimals or recurring decimals :

$- \frac{23}{80}$

In case of terminating write their decimal expressions.