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Ex 1.3,6 - Look at several examples of rational numbers - Finding decimal expansion

Ex 1.3,6 - Chapter 1 Class 9 Number Systems - Part 2

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Ex1.3, 6 Look at several examples of rational numbers in the form / (q 0), where p and q are integers with no common factors other than 1 and having terminating decimal representations (expansions). Can you guess what property q must satisfy? Let us take 1/2 , 1/4 , 7/8 , 37/25 , 8/125 ,17/20 , 31/16 etc. which has terminating decimal expansion Hence, in / , q is either 2 or power of 2 or 5 or power of 5 or both

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.