Question

A bag of numbered lottery balls contains the numbers 1 through 40. What is the probability that a randomly selected ball will be a number that is not a multiple of 13?

Answer 1

3/40

Explanation:

So we look for all the multiples of 13 not over 40

There are 3 which are; 13, 26, 39

So it will be 3/40

Answer 2

37/40

Explanation:

1-3/40=37/40