A family has 8 girls and 4 boys. A total of 2 children must speak on behalf of the family at a local benefit. What is the probability that at least one boy will be chosen?
1 Answer
Jul 6, 2018
Let's look at the probability that no boy is chosen.
Explanation:
First selection:
Second selection:
Combined probability of first AND second being a girl
(Remember AND means MULTIPLY):
The probability of at least one boy is then the complement of this, or in other words: