A bag of balloons contains 5 red balloons, 11 green balloons, 15 yellow balloons, and 7 orange balloons. What is the probability that a randomly selected balloon would be green or orange?

Answer:
c. 7/10
Step-by-step explanation:
there are only 3 numbers from 1 to 10 which are multiples of 3. So you just subtract 3 from 10 to find those which are not multiples of 3.
So u get 7/10
Uh i dunno if i explained enough though