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Irrational Numbers
Last updated at May 11, 2026 by Teachoo
Class 9
Chapter 3 Class 9 - The World of Numbers (Ganita Manjari I)
- The Human Need to Count
- Exercise Set 3.1
- The Revolution of Śhūnya
- Integers
- Exercise Set 3.2
- Rational Numbers
- Exercise Set 3.3
- Rational Numbers on the Number Line
- Absolute Value of a Rational Number
- Rational Numbers between two Rational numbers
- Exercise Set 3.4
-
Irrational Numbers
- Construction of Length √n on Number line
- The Story of Pi (π) and Madhava’s Infinite Series
- Real Numbers & Imaginary Numbers
- Decimal Expansion of Real Numbers
- Magic of Cyclic Numbers
- Constructing a Square Root Spiral
- Exercise Set 3.5
- End-of-Chapter Exercises
Transcript
Irrational Numbers Ratio (No Ratio) = 1.414213… = 3/2 Rational Irrational Irrational Numbers are not of the form 𝒑/𝒒 They cannot be written in fraction Example √𝟐 = 1.4142135623730950488016887242096… 𝝅 = 3.1415926535897932384626433832795… 𝒆 = 2.7182818284590452353602874713527…
