Ex 1.3,4 - Chapter 1 Class 9 Number Systems

Last updated at April 16, 2024 by

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Ex1.3, 4 Express 0.99999…in the form 𝑝/π‘ž . Are you surprised by your answer? With your teacher and classmates discuss why the answer makes sense. Let x = 0.9999….. Multiplying equation (1) with 10 10x = 10 Γ— (0. 999…) 10x = 9. 999… Subtracting (2) from (1) i.e. (2) – (1) 10x – x = 9.9999… – 0.9999… 9x = 9 x = 9/9 x = 1 Thus, 0.9999… = 1

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo