Question

A basket of 50 golf balls contains 22 yellow balls. If 8 balls are selected at random from the basket, determine the probability that none of those selected is a yellow ball.

Answer 1

42/50 is the probability.

Answer 2

28/50 * 27/49 ...
= (28*27*26*25*24*23*22*21)/(50*49*48*47*46*45*44*43)

= (28!/(28-8)!) / (50!/(50-8)!)
= 117/20210
= 0.005789