If you spin the spinner, what is the probability it will stop on a multiple of 3? 1/4, 1/2, 3/20, 3/10.

Probability = number of desired outcomes / number of total outcomes
Multiples of 3 = 3, 6, 9, 12, 15, 18 = 6 possibilities
Total number of outcomes = 20
6 / 20 = 3 / 10
Answer: 3/10
Hope this helps!