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Number Theory Level 2

Dan's 4-digit lock contains the digits 0-9. If he says that the number is greater than 3586, how many possible passwords are there?

6416 6414 6412 6413 6415

Excel in math and science

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It's hard to learn from lectures and videos

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Our wiki is made for math and science

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including olympiad champions, researchers, and professionals.

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by Marc Ferrer

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