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Rational number
01
有理数, 理性数
a number that can be written as a fraction, where both the top and bottom are whole numbers, and the bottom is not zero
Example
3/4 is a rational number because it can be written as a fraction of two integers.
The decimal 0.5 is a rational number because it can be converted to the fraction 1/2, with 1 and 2 being integers.