Answer
$\frac{3}{5}$
Work Step by Step
Total number of balls = 20
Number of white balls = 9
Number of orange balls = 3
Probability that the golf ball is white or orange = $\frac{9}{20} + \frac{3}{20} = \frac{12}{20}=\frac{3}{5}$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.