Which of the following is a rational number?

1. π

2. $\sqrt{2}$

3. 3.4

4. 1.010010001..

Which of the following is an irrational number?

1. 2.7

2. $2.7\overline{2}$

3. $\sqrt{11}$

4. $\dfrac{2}{7}$

When $8.\overline{32}$ is expressed as a vulgar fraction, then it becomes :

1. $\dfrac{208}{824}$

2. $\dfrac{824}{99}$

3. $\dfrac{800}{99}$

4. $\dfrac{416}{45}$

0.3 when expressed as a ratio of two integers, becomes :

1. $\dfrac{103}{330}$

2. $\dfrac{52}{165}$

3. $\dfrac{103}{111}$

4. $\dfrac{104}{333}$