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Red ball... Red ball (Posted on 2002-10-17) Difficulty: 4 of 5
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.)
is this right? | Comment 4 of 15 |
i'm new at this, and i'm just going to guess at the solution. cuz after lookin at TomM's comments, i got really confused. i think it's 50%, is that right?
  Posted by hai on 2002-10-18 17:02:51
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