Answer to Question #334197 in Statistics and Probability for mia

Question

There is a spinner with 15 equal areas, numbered 1 through 15. If the spinner is spun one time, what is the probability that the result is a multiple of 3 or a multiple of 4?

Answer 1

The total number of outcomes is

$N=15.$

The favorable outcomes are 3, 4, 6, 8, 9, 12, 15.

The number of favorable outcomes is n = 7.

The probability that the result is a multiple of 3 or a multiple of 4 is

$P=\cfrac{n}{N}=\cfrac{7}{15}=0.467.$