An urn contains 7 blue balls, 12 red balls, 6 green balls, and 14 yellow balls. You stick your hand in and pull out a ball without looking. What is the probability of selecting a red ball?

Answer 1

Okay, we have

7 Blue Balls

12 Red

6 Green

14 Yellow

______________

39 Total # of Balls in the Urn

12 of those Balls are Red

So, the probability of picking a Red Ball at random is 12/39

In Decimal notation = 0.308 or approximately 31% Voila!