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Rational vs. irrational

Tell me whether pi is a rational or irrational number? why?

What about non-terminating repeating decimals such as (9.252525 or 3.191919)? Are these rational or irrational?

Solution Preview

pi is an irrational number because it is a non-recurrent, never ending decimal number.
Non-terminating ...

Solution Summary

This provides a brief explanation of rational and irrational numbers.