perplexus.info :: Probability : Simple coins

Simple coins (Posted on 2002-04-09)

I toss two coins and look at the outcome. I then tell you that at least one of the coins is showing up as "tails". What is the chance that the other one is showing "tails" as well?

(from techInterview.org)

See The Solution Submitted by art

Rating: 3.8750 (16 votes)

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Isn't it...

| Comment 1 of 45

Is it not still one half? The probability of having one coin land as tails is a half reguardless of other factors, isn't it?

Posted by levik on 2002-04-09 10:41:02

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