SOLUTION: Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?

Algebra ->  Probability-and-statistics -> SOLUTION: Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?       Log On


   



Question 234981: Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?
------------------
P(x=2) = 3C2(1/2)^2*(1/2) = 3*(1/4)(1/2) = 3/8
==================================================
Cheers,
Stan H.