Simplify each of the following expressions :

Classify the following numbers as rational or irrational: (i) 2 − √5

Classify the following numbers as rational or irrational :

Find three different irrational numbers between the rational numbers 5/7 and 9/11 .

Write three numbers whose decimal expansions are non-terminating non-recurring.

Look at several examples of rational numbers in the form p/q (q ≠ 0), where p and q are integers with no common factors other than 1 and having terminating decimal representations (expansions).