chillimath.com

chillimath

1. Classify the following numbers as rational or irrational:

(i) \(2-\sqrt 5\)

(ii) \((3+\sqrt{23})-\sqrt{23}\)

(iii) \({2\sqrt 7}\over{7\sqrt 7}\)

(iv) \(1\over {\sqrt 2}\)

(v) \(2\pi\)