Question 945839
<pre>
They can choose the first digit any of 9 ways. (can't choose 0)
They can choose the last digit any of 9 ways. (can't choose 0)
They can choose the middle digit any of 10 ways. (can choose 0)
That's 9x9x10 = 810 ways but we must subtract 2 for 905 and 289.

Answer: 810-2 = 808 ways

Edwin</pre>