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Question 51

Which smallest number must be subtracted from 400, so that the resulting number is completely divisible by 7?

On dividing 400 by 7, we get : $$400=7\times57+1$$

Thus, the smallest number which should be subtracted from 400 = 1

Also, $$400-1=399$$ is completely divisible by 7.

=> Ans - (B)

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