Number Systems ...

Find one irrational number between 0.2101 and 0.2222.

Simplify:$$\dfrac{7+3\sqrt{5}}{3+\sqrt{5}}-\dfrac{7-3\sqrt{5}}{3-\sqrt{5}}$$

$$a\times a\times b\times b\times b$$ can be written as 

Which of the following rational numbers is positive?

Which of the following rational numbers is negative?

A number of the form $$\dfrac{p}{q}$$ is said to be a rational number if

$$\left(\dfrac {1}{10}\right)^0$$ is equal to

By solving $$(6^0 -7^0) \times (6^0+7^0)$$, we get ________.