Question

A technician is launching fireworks near the end of a show. Of the 14 remaining fireworks, nineare blue and five are red. If she launches six of them in a random order, what is the probability that exactly 4 of them are blue ones?

Answer 1

(6 choose 4) * (9/14 * 8/13 * 7/12 * 6/11) * (5/10 * 4/9) = 60/143 = 0.4196