Question
Without doing the actual division, find the remainder
when 28735429 is divided by 9.Solution
To find the remainder when dividing by 9, sum the digits of the number:Â Â (2 + 8 + 7 + 3 + 5 + 4 + 2 + 9 = 40)Â Â Sum the digits of 40:Â (4 + 0 = 4)Â Â The remainder when dividing 28735429 by 9 is 4.
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