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

1.	Classify the following numbers as rational or irrational:(i) 2−√5 (ii) (3+√23)−√23 (iii) 2√77√7(iv) 1√2 (v) 2π
Answer» Classify the following numbers as rational or irrational: (i) $2 - \sqrt{5}$ (ii) $(3 + \sqrt{23}) - \sqrt{23}$ (iii) $\frac{2 \sqrt{7}}{7 \sqrt{7}}$ (iv) $\frac{1}{\sqrt{2}}$ (v) $2 π$

Classify the following numbers as rational or irrational:(i) 2−√5 (ii) (3+√23)−√23 (iii) 2√77√7(iv) 1√2 (v) 2π

Answer»

Classify the following numbers as rational or irrational:

(i) $2 - \sqrt{5}$ (ii) $(3 + \sqrt{23}) - \sqrt{23}$ (iii) $\frac{2 \sqrt{7}}{7 \sqrt{7}}$

(iv) $\frac{1}{\sqrt{2}}$ (v) $2 π$