In how many different number of ways 3 boys and 2 girls can sit on a bench?	Choose the correct answer:	A) 720	B) 730	C) 740	D) 750	E) 120
npn = n!   5p5 = 5 × 4 × 3 × 2 × 1 = 120   120
<result>E</result>
In how many different number of ways 3 boys and 2 girls can sit on a bench?