perplexus.info :: Probability : Red ball... Red ball

Red ball... Red ball (Posted on 2002-10-17)

If you take two balls randomly out of a jar of colored balls, there is a 50% chance that the balls will both be red.

What is the total percentage of red balls in the jar?

See The Solution Submitted by levik

Rating: 3.1538 (13 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Red ball... Red ball

| Comment 9 of 17 |

Easy - if you know probability!
pabrtr

Posted by Paula Bilton on 2003-08-14 08:16:42

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (21)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info