Irrational Numbers | Number System | Class 9 Maths

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.
1.5 as a fraction
square root of 42
square root of 22
1.5 in fraction
is 0 an irrational number