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.
To find the probability of selecting an orange or red golf ball, we need to find the total number of favorable outcomes (number of orange or red balls) and divide it by the total number of possible outcomes (total number of balls in the bag).
First, let's calculate the total number of orange and red balls in the bag. There are 2 orange balls and 5 red balls, so the total number of favorable outcomes is 2 + 5 = 7.
Next, let's calculate the total number of balls in the bag. We have 2 orange balls, 5 red balls, and 18 brown balls, so the total number of possible outcomes is 2 + 5 + 18 = 25.
Finally, let's calculate the probability by dividing the number of favorable outcomes by the number of possible outcomes:
Probability = (Number of favorable outcomes) / (Number of possible outcomes)
= 7 / 25
So the probability of selecting an orange or red golf ball is 7/25.
To find the probability of selecting an orange or red golf ball, we need to determine the total number of orange and red balls and divide it by the total number of balls in the bag.
The bag contains 2 orange balls and 5 red balls, so the total number of orange and red balls is 2 + 5 = 7.
The bag also contains 18 brown balls.
The total number of balls in the bag is 2 + 5 + 18 = 25.
Therefore, the probability of selecting an orange or red golf ball is 7/25.
#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