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Question
In the following number, replace * by the smallest number to make it divisible by 3:
6*1054
Solution
621054
Here, 6 + * +1 + 0 + 5 + 4 = 16 + * should be a multiple of 3.
To be divisible by 3, the least value of * should be 2, i.e., 16 + 2 = 18, which is a multiple of 3.
∴ * =2
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