Every non-terminating decimal number is a :

1. recurring decimal

2. real number

3. non-recurring decimal

4. circulating decimal

7.478478…. is a :

1. terminating rational

2. recurring

3. neither rational non-terminating

4. not real

$\dfrac{71}{75}$ is :

1. terminating

2. non-terminating

3. periodic decimal

4. not a rational number

Which of the following is terminating:

$\dfrac{13}{85}, \dfrac{51}{405} \text{ and } \dfrac{9}{524}$

1. $\dfrac{13}{85}$

2. $\dfrac{9}{524}$

3. $\dfrac{51}{405}$

4. None