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Question
In the following number, replace M by the smallest number to make resulting number divisible by 9: 627M9
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Solution
The given number = 627M9
Sum of its given digits = 6 + 2 + 7 + 9 = 24
The number next to 24, which is divisible by 9 is 27
Required smallest number = 27 – 24 = 3
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