A spinner is divided into eight equal parts numbered 1 to 8. if the spinner is spun once, what is the probability that it stops on a number that is a multiple of 2?

Since the total number of available selections is divided by two, the probability is 50%. If we look at the total set of numbers, we find that even numbers are multiples of 2. 2, 4, 6, 8 (which makes up half of the numbers on the spinner).