In a class there are 20 boys and 25 girls. In how many ways can a boy and a girl be selected?  Choose the correct choice from the following options:
A) 400 B) 500 C) 600 D) 530 E) 630
Explanation:   We can select one boy from 20 boys in 20 ways.   We select one girl from 25 girls in 25 ways   We select a boy and girl in 20 * 25 ways i.e., = 500 ways.   Answer: Option 500
<result>B</result>
In a class there are 20 boys and 25 girls. In how many ways can a boy and a girl be selected?