Ball Draw
About this exercise
The chance of drawing a particular item from a container.
Example problems
A few of the problems this exercise asks. The printable worksheet holds ten fresh ones.
- What is the probability of drawing a red ball?
- What is the probability of drawing a blue ball?
Try it yourself first — open a section below only if you get stuck.
How to solve it
Divide the number of favorable items by the total number of items.
Worked example
Three red balls among eight gives a probability of three eighths.
Common mistake
Dividing by the unwanted items. The denominator is always the whole collection.