Question

Classify the following numbers as rational or irrational with justification. i) 6.412341234... ii)1.919919991... iii) [root2 +3]-[root2-5] iv)root20/root5 v)0.326 vi)root72/root81 vii)root3.61 viii)-root2.25 ix) 2root125

Answer 1

i. rational (non.terminating + recurring)
ii. irrational (non term. + non recurring )
iii. irrational (IR + R=IR)