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RD Chapter 1 Number Systems Ex 1.2 Solutions

Question - 1 : - Express the following rational numbers as decimals:

Answer - 1 : -


Question - 2 : -

Answer - 2 : -


Question - 3 : - Look at several examples of rational numbers in the form pq (q ≠ 0), where p and q are integers with no common factors other than 1 and having terminating decimal representations. Can you guess what property q must satisfy?

Answer - 3 : - The property is if the denominators have factors 2 or 5 or both, the decimal representation will be terminating e.g.

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