Divide the 9 numbers 1, 2, ..., 9 into 3 groups to form 3 three-digit numbers respectively, and make these three three-digit numbers form a ratio of 1:2:3, and try to find all those that meet the conditions Three three-digit numbers. - Code World

Divide the 9 numbers 1, 2, ..., 9 into 3 groups to form 3 three-digit numbers respectively, and make these three three-digit numbers form a ratio of 1:2:3, and try to find all those that meet the conditions Three three-digit numbers.

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