Question 763195
You have each of the different ways the boys can
be seated. Each of these arrangements can be 
combined with an arrangement of girls. The
girls can be seated in the same number of ways as boys.
{{{ ( 7*6*5*4*3*2*1 )*( 7*6*5*4*3*2*1 ) }}}
{{{ 7! * 7! = 5040*5040 }}}
{{{ 7!*7! = 25401600 }}}
They can be seated in 25,401,600 different ways