Is negative 5.7 a rational number?

1 Answer
Shwetank Mauria
Sep 12, 2016

Yes, it is.

Explanation:

A rational number is a number, which can be described as a ratio of two integers. As it is a ratio of integers, it can be positive as well as negative.

Further, any decimal fraction, which limits itself beyond the decimal point (such as 5.7 which does not go beyond tenth place) or has continuously repeats numbers (till infinity) beyond a certain place of decimal (such as 4.33333.... or 0.232142857142857142857....) can be easily written as ratio of integers, however large and hence are rational.

Now as -5.7=-57/10=(-57)/10, a ratio of two integers, it is a rational number.

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