Posted by **Jody** on Wednesday, May 4, 2011 at 3:41pm.

For the numbers from 100 through 199, how many have different digits in increasing order?

- math -
**PsyDAG**, Thursday, May 5, 2011 at 11:25am
123, 124, 125, 126, 127, 128, 129, 134, 135....

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