Difference between revisions of "2011 CEMC Gauss (Grade 8) Problems/Problem 5"
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Latest revision as of 15:01, 19 October 2025
Problem
A bag contains 
balls. Exactly 
of these balls are red. Alex reaches into the bag and randomly selects one of the balls. What is the probability that the ball Alex selects is red?
Solution
To find the probability that the ball is red, we can divide the number of balls that are red in the bag, and divide it by the total number of balls. This gives:
~anabel.disher
| 2011 CEMC Gauss (Grade 8) (Problems • Answer Key • Resources) | ||
| Preceded by Problem 4 |
Followed by Problem 6 | |
| 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 | ||
| CEMC Gauss (Grade 8) | ||
