Question 388756
<pre>
It doesn't matter that there are 3 benches.
It doesn't matter that they sit in pairs.  
That was put in there just to throw you off.

All that matters is that there are 6 places for 6 people to sit.
The problem would be the same if there were 6 chairs in a row.

That's 

6 things, Position 6

or 

6P6

or

6!

or

720 ways

Edwin</pre>