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

$\sqrt{8}(\sqrt{8} - 1)$ is always :

1. rational

2. irrational

3. whole number

4. natural number

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

1. rational

2. irrational

3. neither rational nor irrational

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

Two irrational numbers between 8 and 11 are :

1. $\sqrt{65} \text{ and } \sqrt{120}$

2. $\sqrt{69}$ and 10.5

3. 8.2 and $\sqrt{125}$

4. 3 and $\sqrt{110}$