Example 6 Show that 3.142678 is a rational number. In other words, express 3.142678 in the form 𝑝/𝑞 , where p and q are integers and q ≠ 0. 3.142678 = 3142678/1000000 , It is of the form 𝑝/𝑞 , where p = 3142678, q = 1000000 hence is a rational number.

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Chapter 1 Class 9 Number Systems

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