SOLUTION: What is the probability that in ten independent tosses of a fair coin we get two heads in the first four tosses and five heads altogether?

Algebra ->  Probability-and-statistics -> SOLUTION: What is the probability that in ten independent tosses of a fair coin we get two heads in the first four tosses and five heads altogether?      Log On


   

Question 599318: What is the probability that in ten independent tosses of a fair coin we get two heads in the first four tosses and five heads altogether?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
You need 2/4 heads followed by 3/6 heads. The probabilities of these events happening are




Multiply these to get the answer.