Posted by **Kelly** on Monday, December 10, 2007 at 5:52pm.

How many 2-digit numbers can be formed using the digits 1,2,3,4,5,6,7,8,9 and 0? No digit can be used more than once

- Calculus -
**Ms. Sue**, Monday, December 10, 2007 at 5:55pm
10, 23, 45, 67, 89

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