Question 939752
<pre>
Choose the first letter 3 ways,
Choose the 2nd letter 9 ways.
Choose the 3rd letter 8 ways.
Choose the 4th letter 7 ways.
Choose the 5th letter 6 ways.
Choose the 6th letter 5 ways.
Choose the 7th letter 4 ways.
Choose the 8th letter 3 ways.
Choose the 9th letter 2 ways.
Choose the 10th letter 1 ways.

3×9×8×7×6×5×4×3×2×1 = 3×9! = 1088640 ways.

Edwin</pre>