Calculate the different number of ways 7 boys and 2 girls can sit on a bench?	Choose the correct choice from the following answers: A) 362881 B) 362880 C) 311880 D) 362280 E) 362810
npn = n!   9p9 = 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 = 362880   362880
<result>B</result>
Calculate the different number of ways 7 boys and 2 girls can sit on a bench?