Question 1114611
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Seat them in an order that first satisfies the requirements....<br>
Dahlia: 1 choice -- the center seat.
George: 2 choices -- either side of Dahlia.<br>
After that, there are no restrictions.  There are 5 seats left; the number of ways to fill them with no restrictions is 5*4*3*2*1 = 120.<br>
So the total number of different orders is 1*2*120 = 240.