In how many different number of ways 4 man and 2 woman can sit on a bench?  Pick.
A) 600	B) 620	C) 640	D) 660	E) 720
npn = n!   6p6 = 6 × 5 × 4 × 3 × 2 × 1 = 720   720)
<result>E</result>
In how many different number of ways 4 man and 2 woman can sit on a bench?