Question

A bag holds a set of marbles. Included in the set are 4 red marbles, 7 green marbles, 9 blue marbles, and 14 yellow marbles. What is the probability of drawing a red or blue marble?

Answer 1

4 red + 7green + 9blue + 14yellow= 33
so 4red + 9blue =13
so i think the answer should be 13 over 33 or 13/33 or 13
----
33

Answer 2

4 red + 7green + 9blue + 14yellow= 33 so 4red + 9blue =13 so i think the answer should be 13 over 33 or 13/33 or 13 ---- 33