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Question
In the following number, replace M by the smallest number to make resulting number divisible by 9: 77548M
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Solution
The given number = 77548M
Sum of its given digits = 7 + 7 + 5 + 4 + 8 = 31
The number next to 31, which is divisible by 9 is 36.
Required smallest number = 36 – 31 = 5
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