Question

There is a spinner with 13 equal areas, numbered 1 through 13. If the spinner is spun one time, what is the probability that the result is a multiple of 4 and a multiple of 6?

Answer 1

Multiples of both 4 and 6 are multiples of lcm(4,6) = 12. Among 1–13 only 12 qualifies, so there is 1 favorable outcome out of 13.

Probability = 1/13.