What is irrational number with example

An irrational number is a type of real number which cannot be represented as a simple fraction. It cannot be expressed in the form of a ratio. If N is irrational, then N is not equal to p/q where p and q are integers and q is not equal to 0. Example: √2, √3, √5, √11, √21, π(Pi) are all irrational.n:

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In mathematics, the irrational numbers are all the real numbers which are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers.

Explanation:

Pi, π: 3.14159265358979…

Euler’s Number, e: 2.71828182845904…

Golden ratio, φ: 1.61803398874989…

if a number keeps going on and on then it is irrational but 3.5 repeating is not because u know the end

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the answer would be in this answer. someone already asked the question.