Q. Which of the following numbers are rational?Any ordinary number of arithmetic: Any whole number, fraction, mixed number or decimal; together with its negative image.
A rational number is a nameable number, in the sense that we can name it according to the standard way of naming whole numbers, fractions, and mixed numbers. "Five," "Six thousand eight hundred nine," "Nine hundred twelve millionths," "Three and one-quarter," and so on.
1 | −6 | 3½ | − | 2 3 | 0 | 5.8 | 3.1415926535897932384626433 |
a b | , where a and b are integers (b 0). |
square is 2. | 7 5 | is close, because |
7 5 | · | 7 5 | = | 49 25 |
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