The Nine Digit Number Problem

Simon is working out a math problem looking for a nine digit number in which the first two digits firm a number divisible by 2, the first three digits form a number divisible by 3, the first four digits form a number divisible by 4 and so on, the whole number being divisible by 9. There is only one answer to this problem if one does not use zeros as digits.

Inspired by a SingingBanana Channel video.

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