On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is ?

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By hit and trail, we find that 47619 x 7 = 333333. 7) 333333 (47619 333333 ---------------- 0 And 476190476 x 7 = 3333333333 but smallest number is 47619.

On multiplying a number by 7, the product is a number each of whose digits is 3. The smallest such number is ?

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