Question

Horus has 50 girls and35 boys. If two are chosenat random to sing a duet,What is the probability thatboth will be boys?

Answer 1

`(1)/(6)`

1) Let's begin by finding the number of children: 50 girls and 35 boys=85 children.

2) The favorable event is 35 boys

3) So now, let's write out the following probability bearing in mind that one person was chosen right after the another.

`P(boys\:and\:boys)=(35)/(85)*(34)/(84)=(1)/(6)`