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Role of Zeroes and One

Property of Zero :

 


Any rational number added to 0, is the rational number itself.
 

Example : If 'p' is a rational number, then p+ 0 = 0 + p = p. Hence 0 is called the identity element.


 

Example : (i) 
 

                 (ii) 

                       Role of 1

                       × 1

                     × 1 =


A number when multiplied by 1 gives the same number itself, hence 1 is called as the multiplicative identity for rational numbers.



 




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