SOLUTION: Three coins are tossed in the air. what is the probability that exactly two of them turn up heads?
Algebra.Com
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) (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.
RELATED QUESTIONS
Three coins are tossed in the air. what is the probability that exactly two of them turn... (answered by mathsteacher)
Twelve fair coins are tossed all at once. What is the probability that exactly 5
of... (answered by stanbon)
.Three coins are tossed in succession. What is the probability of... (answered by stanbon)
Two coins are tossed. Find the probability that both coins turn up heads given that at... (answered by Alan3354)
Three unbiased coins are tossed. What is the probability of getting at most two... (answered by Fombitz)
Use a diagram to list the sample space showing the possible arrangements of heads and... (answered by stanbon)
If 11 coins are tossed what is the probability of getting EXACTLY 2... (answered by sophxmai)
Five coins are thrown. What is the probability that exactly the two of them will be... (answered by ewatrrr)
Three fair coins are tossed. What is the probability that at least two are heads?... (answered by Fombitz)