Without doing any actual division, find which of the following rational numbers have terminating decimal representation :

(i) $\dfrac{7}{16}$

(ii) $\dfrac{23}{125}$

(iii) $\dfrac{9}{14}$

(iv) $\dfrac{32}{45}$

(v) $\dfrac{43}{50}$

The negative of an irrational number is :

1. a rational number

2. an irrational number

3. a rational number and an irrational number

4. a whole number

For the given figure length of OA is :

1. $\sqrt{5}$

2. $\sqrt{3}$

3. $\sqrt{5} \text{ or } \sqrt{3}$

4. neither $\sqrt{5}$ nor $\sqrt{3}$

$2\sqrt{3} \times 3\sqrt{8}$ is :

1. rational

2. irrational

3. neither rational nor irrational

4. 12 $\times \sqrt{5}$