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By definition, rational numbers may be expressed as fractions. On the other hand, irrational numbers may never be expressed as fractions.

π = 3.1415926... is an irrational number because there is no way that it may be expressed as a fraction.

π = 3.1415926... is an irrational number because there is no way that it may be expressed as a fraction.

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Simply, Rational numbers are numbers that can be written to ratio, so it can be written too into fraction, where both numerator and denominator are whole numbers while Irrational numbers can't be written as fraction but they can be written as decimal.

Another is whole numbers are rational, for ex. 120, this can be 120/1 while for example the square root of 21, this has endless non-repeating answer, so this is irrational number.

Another is whole numbers are rational, for ex. 120, this can be 120/1 while for example the square root of 21, this has endless non-repeating answer, so this is irrational number.