Question

A golf ball is selected at random from a golf bag. if the golf bag contains 9 type A balls, 5 type B balls, and 6 type C balls, find the probability that the golf ball is not a type A ball is.

Answer 1

There are 9 type A balls, 5 type B balls, and 6 type C balls in total.

Total number of balls \(=9+5+6=20\)

Number of golf balls that are NOT of type \(A=5+6=11\)

Hence, probability that the golf ball is not a type A ball \(=\frac{11}{20}=0.550\)