Rational Number...

If $$y$$ be the reciprocal of rational number $$x$$, then the reciprocal of $$y$$ will be

The reciprocal of $$0$$ is

The reciprocal of any rational number $$\dfrac{p}{q}$$ where $$p$$ and $$q$$ are integers and $$p,q \neq 0.$$

Which of the following statements is always true ?

$$\left(-5 \dfrac{1}{3}\right) \times\left(-1 \dfrac{7}{8}\right)$$ is equal to

$$\dfrac{-3}{15}-\left(\dfrac{-2}{15}\right)$$
is equal to

$$\left(-2 \dfrac{1}{3}\right) \div 2 \dfrac{11}{12}$$ is
equal to       

Which of the following numbers lie on the right of $$\dfrac{2}{3}$$

Let $$a$$ and $$b$$ are rational numbers and $$a > b$$. Then, on the number line,

Which of the following numbers is a rational number?