SOLUTION: Three coins are tossed. What is the probability of two tails and one head?
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Question 27580: Three coins are tossed. What is the probability of two tails and one head?
Answer by longjonsilver(2297) (Show Source): You can put this solution on YOUR website!
just by thinking of all the possible outcomes, we could get...
TTT
-----------
TTH
THT
HTT
-----------
THH
HTH
HHT
-----------
HHH
Each roll has a probability of 1/2...3 in a row is (1/2)*(1/2)*(1/2) --> 1/8
So Each of the 8 possible outcomes above has probability of 1/8.
We want P(2 tails) = P(HTT) + P(THT) + P(TTH)
--> 1/8 + 1/8 + 1/8
-->3/8
jon.
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