Question 934786
If the 2 people that want to be are seated
opposite each other, there are 2 ways to
to do this a opposite b, and then switch
seats, b opposite a
----------------------
They can do this for 6 seats to make all the
possibilities, so {{{ 2*6 = 12 }}} possible
----------------------
There are 10 seats left once they are seated,
and the possible seatings of 10 people is:
{{{10*9 *8*7 *6 *5*4*3*2*1 }}}
Factoring in the seatings for the opposite ones, 
I get:
{{{ 12*10*9*8*7*6*5*4*3*2*1 }}}
You can do the math
Hope I got it