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Question
In the following number, replace M by the smallest number to make resulting number divisible by 9: 76M91
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Solution
The given number = 76M91
Sum of its given digits = 7 + 6 + 9 + 1 = 23
The number next to 23, which is divisible by 9 is 27
Required smallest number = 27 – 23 = 4
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