Irrational Numbers

1. Irrational Number
   A number that is not a rational number, meaning it is a non-repeating, infinite decimal.
   
   Not all numbers expressed using square roots are irrational. If the number inside the square root is the square of a rational number, then the number is rational.
   (Example) , so is a rational number.
   
   
2. Classification of Decimals
   
   

Real Numbers

1. Real Numbers : The set of all rational and irrational numbers combined is called the real numbers.
2. Classification of Real Numbers