Which of the following is the set of rational numbers?

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${1, - 4, \frac{1}{2}, \frac{5}{7}}$

{-2,-1,0,2,1}

{0,1,2,3,4}

{1,2,3,4,}

answer is A.

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Detailed Solution

A rational number is a number that is of the form $\frac{p}{q}$ , where p and q are integers and q is not equal to 0. The set of rational numbers is denoted by Q. Observe the following figure which defines a rational number.

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