The difference between Irrational number and Rational number
When used as nouns, irrational number means any real number that cannot be expressed as a ratio of two integers, whereas rational number means a number that can be expressed as the ratio of two integers.
check bellow for the other definitions of Irrational number and Rational number
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Irrational number as a noun (mathematics):
Any real number that cannot be expressed as a ratio of two integers.
Examples:
"The square root of a positive integer is an [[irrational number]] unless the positive integer is a perfect square, in which case the square root will also be a positive integer."
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Rational number as a noun (mathematics):
A number that can be expressed as the ratio of two integers.