# Natural numbers

Determine the number of all natural numbers greater than 200 in which the digits 1, 2, 4, 6, and 8 occur at most once each.

### Correct answer:

**Showing 3 comments:**

**Math student**

This is wrong (or the question is written poorly). There are infinite such numbers:

12468

124680

1246800

etc...

12468

124680

1246800

etc...

1 year ago 2 Likes

**Math student**

The description is incorrect. The solution above corresponds to the same problem in which there's a limit on the digits in the natural numbers abiding to the given conditions.

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