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Question
In the following number, replace * by the smallest number to make it divisible by 9:
6702*
Solution
67023
Here, 6 + * + 7 + 0 + 2 = 15 + * should be a multiple of 9.
To be divisible by 9, the least value of * should be 3, i.e., 15 + 3 = 18, which is a multiple of 9.
∴ * = 3
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