Question

from all the two digit multiples of 5 , one number is selected at random. What is the probability that it is exactly divisible by 3 or 4

Answer 1

Answer:

Step-by-step explanation:

Well, first of all, you need to list all the 2-digit multiples of 5. There is:

10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 and 95

You now need to find the ones that are divisible by 3 or 4: (they are underlined)

10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80, 85, 90 and 95

That is 9 out of 18 numbers*, which is equivalent to 50%. There is a nine in eighteen chance that the number that is chosen is divisible by either 3 or 4.

Hope this helps! :)

* (which are divisible by either 3 or 4)