In a class there are 27 boys and 14 girls. The teacher wants to select 1 boy and 1 girl to represent the class in a function.
Question:
In a class there are 27 boys and 14 girls. The teacher wants to select 1 boy and 1 girl to represent the class in a function. In how many ways can the teacher make this selection?
Solution:
No. of boys in the class = 27
No. of girls in the class = 14
Ways to select a boy = 27
Similarly, ways to select a girl = 14
$\therefore$ Number of ways to select 1 boy and $1 \mathrm{girl}=27 \times 14=378$