Question

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 and a multiple of 2?

Answer 1

Explanation:

3/5 or 9/15

Answer 2

6.67% probability that the result is a multiple of 5 and a multiple of 2

Explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

Desired outcomes:

Multiples of 2 AND 5

Between 1 and 15, the multiples of 2 are: 2,4,6,8,10,12,14

Between 1 and 15, the multiples of 5 are: 5,10,15

So only 10 is a multiply of both 2 and 5, so only one desired outcome, which means that
`D = 1`

Total outcomes:

Any number between 1 and 15, there are 15, so
`T = 15`

Probability:

`p = (D)/(T) = (1)/(15) = 0.0667`

6.67% probability that the result is a multiple of 5 and a multiple of 2