Question

A golf ball selected at random from a golf bag. If the golf bag contains 7 black balls 10 brown balls and 4 green balls find the probability of the following event.

the golf ball is black or brown

Answer 1

Answer: 17/21

Reason

There are 7+10 = 17 black or brown golf balls out of 7+10+4 = 21 golf balls total. The fraction 17/21 cannot be reduced further.

17/21 = 0.8095 = 80.95% approximately