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Question
In the following number, replace * by the smallest number to make it divisible by 9:
835*86
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Solution
835686
Here, 8 + 3 + 5 + * + 8 + 6 = 30 + * should be a multiple of 9.
To be divisible of 9, the least value of * should be 6, i.e., 30 + 6 = 36, which is a multiple of 9.
∴ * = 6
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