Probability Word Problem

In this lesson you will learn how to solve a probability word problem. Double-click the play button to start the video.

Without looking, Tom draws a marble from a bag containing 12 marbles. There are 3 red marbles, 4 blue marbles, and 5 green marbles. What is the probability that he will draw a blue marble?

When solving probability problems, remember this important formula:

P(event)= Number of favorable outcomes / Total number of outcomes

In the above problem, the number of favorable outcomes is 4 because there are \$ blue marbles in the bag. The total number of outcomes is 12 because there are 12 different marbles in the bag.

A probability can be written as a fraction, a decimal, or a percent. If you choose to write the answer as a fraction, remember to simplify the fraction.

Test your knowledge about this topic by taking an online quiz.

Click on the picture to start the quiz.

Return from Probability Word Problem to Daily Word Problems or to Free Math Videos Online