Math, asked by StarTbia, 1 year ago

5. Without actual division, find which of the following rational numbers have terminating decimal expansion.

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Answers

Answered by mysticd
7
Given 21/15

= ( 3 × 7 )/( 3 × 5 )

= 7/5

= 7/( 2^0 × 5¹ )

Is a terminating decimal .

Since , as the denominator is in the

form of 2ⁿ × 5^m .

21/15 = 7/5 = ( 7 × 2 )/( 5 × 2 )

= 14/10

= 1.4 ( terminating decimal )

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