A golf ball is selected at random from a golfn bag. If the golf bag contains 5 red balls, 6 orange balls and 9 black balls, find the probability of the following event.
The golf ball is red or orange.
5+6+9=20
5+6=11
11/20
To find the probability of an event, you need to divide the number of favorable outcomes by the total number of possible outcomes.
In this case, the event is selecting a red or orange golf ball.
The number of favorable outcomes is the sum of the number of red balls (5) and the number of orange balls (6), which is 11.
The total number of possible outcomes is the sum of the number of red balls, orange balls, and black balls, which is 5 + 6 + 9 = 20.
Therefore, the probability of selecting a red or orange golf ball is:
P(red or orange) = favorable outcomes / total outcomes
= 11 / 20
So, the probability of the golf ball being red or orange is 11/20.