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 and a multiple of 5?

Answer 1

To find the numbers that are both multiples of 3 and 5, we need to find the numbers that are multiples of the least common multiple of 3 and 5, which is 15.

The numbers that are multiples of 15 and on the spinner are 15.

Therefore, there is 1 number out of 15 that is a multiple of 3 and 5.

The probability of spinning a number that is a multiple of 3 and 5 is 1/15 or 0.067 or 6.7%.