Question:
Find the remainder when 981547 is divided by 5. Do this without doing actual division.
Solution:
If a natural number is divided by 5 , it has the same remainder when its unit digit is divided by 5 .
Here, the unit digit of 981547 is 7 . When 7 is divided by 5 , remainder is 2 .
Therefore, remainder will be 2 when 981547 is divided by 5 .