Question 965779
<pre>
Choose a family for each chair in 10P5 = 10*9*8*7*6 ways.
Choose a family member to sit in each chairs in 3*3*3*3*3 = 3<sup>5</sup> ways.

Answer 10*9*8*7*6*3<sup>5</sup> = 7,348,320 ways.

Edwin</pre>