Login/Sign Up
Home » Classify the following numbers as rational or irrational: (i) √21 (ii)
Classify the following numbers as rational or irrational: (i) √21 (ii) {}^{3}\sqrt{3}
CBSE | Class 10 | Exercise 1D | Maths | Real Numbers | RS Aggarwal
Classify the following numbers as rational or irrational: (i) √21 (ii) {}^{3}\sqrt{3}

Answers:

(i) √21 = √3 × √7 is an irrational number because √3 and √7 are irrational and prime numbers.

(ii) {}^{3}\sqrt{3} is an irrational number because 3 is a prime number. So, √3 is an irrational number.

i

More Material