Sunday, June 9, 2019

elementary number theory - Find the remainder when 787777 is divided by 100?


Find the remainder when 787777 is divided by 100?




MyApproach




78720×38+17=78717=I will get the last digit of remainder as 7 but how to calculate tens digit in this question fast using this approach only.




Similarly,Find the remainder when 948728 is divided by 100.




On solving I get 9488=I will get the last digit of remainder as 7 but how to calculate tens digit in this question fast using this approach only.



Again here how to calculate the other digits fast.

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