NCERT Exercise 1.4 - Q1 - Number Systems

Question: Classify as rational or irrational: (i) 2-sqrt(5) (ii) (3+sqrt(23))-(sqrt(23)) (iii) 2sqrt(7)/sqrt(7) (iv) 1/sqrt(2) (v) 2pi

Answer: (i) Irrational (ii) Rational (iii) Rational (iv) Irrational (v) Irrational.

Full step-by-step NCERT solution with diagrams on Something by Zero.