SOLUTION: I need someone to help me with this difficult homework problem: There are eight envelopes, one of them contains a $100 bill and the others are empty. You randomly pick one envel

Algebra ->  Probability-and-statistics -> SOLUTION: I need someone to help me with this difficult homework problem: There are eight envelopes, one of them contains a $100 bill and the others are empty. You randomly pick one envel      Log On


   



Question 432547: I need someone to help me with this difficult homework problem:
There are eight envelopes, one of them contains a $100 bill and the others are empty. You randomly pick one envelope and open it. If it doesn’t have $100 in it, you discard the envelope and pick another envelope. This continues until you pick the envelope that contains $100. Find the probability that the 5th envelope you pick contains the $100 bill. Answer in fraction.

Answer by sudhanshu_kmr(1152) About Me  (Show Source):
You can put this solution on YOUR website!

probability that 5th envelop have $100 bill = (7/8)* (6/7)* (5/6)* (4/5)* (1/4)
= 1/8