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Mathematics 18 Online
OpenStudy (anonymous):

how can you tell if a number is rational?

OpenStudy (saifoo.khan):

Use the definition of fraction. If a real number cannot be represented by a fraction, then it is irrational. Otherwise, it is rational.

OpenStudy (anonymous):

http://en.wikipedia.org/wiki/Rational_number

jimthompson5910 (jim_thompson5910):

specifically a fraction of integers

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