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Question
In the following number, replace M by the smallest number to make resulting number divisible by 3: 46M46
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Solution
The given number = 46M46
Sum of its digits = 4 + 6 + 4 + 6 = 20
The number next to 20 which is divisible by 3 is 21
Required smallest number = 21 – 20 = 1
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