rational numbers can be represented as fractions of integers
3 is rational, 15/5 is a integer fraction that represents it.
irrational numbers cannot be written as a whole integer fraction, such as sqrt5
Another difference, as a decimal, rational numbers repeat, such as
1.666666666... is a rational number
2.456456456456... is rational
Irrational numbers in decimal form never repeat digits.
What is rational and irrational?
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