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I'm sorry if my question is a bit stupid. How many numbers between 100 and 10000 have exactly 3 same figures? I saw this question on the Internet and I couldn't get the right answer. Somehow I got 657, and the answer should be 333. Can anyone help me?

Thanks:)

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# Numbers between 100 and 10000 with exactly 3 same figures

**Physics Forums | Science Articles, Homework Help, Discussion**