A golf ball is selected at random from a golf bag. If the bag contains 2 orange balls, 5 red balls, and 18 brown balls, find the probability of the event. That the golf ball will be orange or red.

Answer 1

#of orange balls=2
#of red balls = 5
Total number of balls = 25
P(orange ∪ Red)
=P(orange)+P(red)-P(orange∩red)
=2/25+5/25-0
=7/25