Probability

[Guest]

A spinner has regions numbered 1 thru 21. What is the probability that the spinner will stop on an even number or a multiple of 3.

 

[stapel]

Are the "regions" of equal areas?

If so, then how many regions are there?

How many of those regions are labelled with even numbers and/or multiples of three?

Divide the latter by the former.

Eliz.