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### Course: Class 10 (Foundation) - Hindi > Unit 2

Lesson 3: Irrational numbers (Hindi)# Intro to rational & irrational numbers (Hindi)

Learn what rational and irrational numbers are and how to tell them apart.

## Want to join the conversation?

- Who invented 0 in India?(3 votes)
- Who is the father of maths?(3 votes)
- Archimedes is known as the Father Of Mathematics.(25 votes)

- What is the sum of all natural numbers?

1+2+3+4+5+6....=?(15 votes) - Why √8.1 is an irrational number?(2 votes)
- Because 8.1 is not a perfect square . Or √8.1 = 2.8460498942... which is non terminating non recurring.(25 votes)

- sir hindi is even the more confusing(1 vote)