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Which numbers are​ rational? The​ dots, . . . ​, indicate that the pattern continues.

I. 5.5555555...
II. 5.50550555...
III. 5.234

Which numbers are rational?

User Frayda
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1 Answer

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The first two alternatives are repeating decimals, while the third option is a decimal number with a finite expansion.

In both cases, the numbers are rational. In fact, the decimal expansion of irrational numbers is infinite and non repating, which is not the case for neither of your options.

User Rilent
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