SOLUTION: Twelve fair coins are tossed all at once. What is the probability that exactly 5 of them land heads up?

Algebra.Com
Question 810545: Twelve fair coins are tossed all at once. What is the probability that exactly 5
of them land heads up?

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
Twelve fair coins are tossed all at once.
What is the probability that exactly 5 of them land heads up?
--------------
Ans: 12C5(1/2)^12 = 0.1934
======================
Cheers,
Stan H.
======================

RELATED QUESTIONS

Three coins are tossed in the air. what is the probability that exactly two of them turn... (answered by stanbon)
Four fair coins are tossed at once. If the outcomes are assumed independent, what is the... (answered by mtmorro)
a fair coin is tossed 16 times what is the probability of obtaining heads exactly once (answered by ikleyn)
Three coins are tossed in the air. what is the probability that exactly two of them turn... (answered by mathsteacher)
10 fair coins are tossed,then what is the probability of 3 heads obtained at most? (answered by Fombitz)
Daniel tosses four fair coins. What is the probability that all four coins will land... (answered by derangoj)
A penny ,a nickel and a dime are tossed simultaneously. What is the probability that... (answered by venugopalramana)
Three fair coins are tossed. What is the probability that at least two are heads?... (answered by Fombitz)
5. A random experiment consists of tossing three fair coins and recording whether each... (answered by Boreal)