Insert seven rational numbers between 2 and 3.

$\dfrac{0}{5}$ is a rational number, $\dfrac{0}{8}$ is a rational number, then $\dfrac{0}{5} ÷ \dfrac{0}{8}$ is:

1. an irrational number

2. a rational number

3. 0

4. undefined

The product of rational number $\dfrac{3}{8}$ and its additive inverse is :

1. 1

2. 0

3. $\dfrac{9}{64}$

4. $-\dfrac{9}{64}$

The sum of rational number $\dfrac{2}{3}$ and its reciprocal is:

1. 1

2. $2\dfrac{1}{6}$

3. 0

4. $\dfrac{5}{6}$