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 5 or a multiple of 3?

Answer 1

multiples of 3: 3, 6, 9, 12, 15
multiples of 5: 5, 10, 15
total of your event = 7 , can't count 15 twice
prov(your event) = 7/15

Answer 2

1/15