A club has 30 members: 15 boys and 15 girls. A 4-person committee is chosen at random. What is the probability that the committee has at least 1 boy and at least 1 girl?
+118687 A club has 30 members: 15 boys and 15 girls. A 4-person committee is chosen at random. What is the probability that the committee has at least 1 boy and at least 1 girl?
1- P(all girls) - P(all boys)
=\(=1-2*\frac{15C4}{30C4}\\ =1-2*\frac{1365}{27405}\\ =1-\frac{26}{261}\\ =\frac{235}{261}\)
