SOLUTION: milu is rolling a 6 sided die. She needs to roll a 6 to be able to begin playing a board game. She keeps rolling until she rolls a 6. a) What is the probability she doesn't roll a

Algebra ->  Probability-and-statistics -> SOLUTION: milu is rolling a 6 sided die. She needs to roll a 6 to be able to begin playing a board game. She keeps rolling until she rolls a 6. a) What is the probability she doesn't roll a      Log On


   



Question 1203831: milu is rolling a 6 sided die. She needs to roll a 6 to be able to begin playing a board game. She keeps rolling until she rolls a 6.
a) What is the probability she doesn't roll a 6 until her second attempt?
b) what is the probability she doesn't roll a 6 until her Third attempt?

Answer by ikleyn(52778) About Me  (Show Source):
You can put this solution on YOUR website!
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milu is rolling a 6 sided die. She needs to roll a 6 to be able to begin playing a board game. She keeps rolling until she rolls a 6.
a) What is the probability she doesn't roll a 6 until her second attempt?
b) what is the probability she doesn't roll a 6 until her Third attempt?
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(a)  Question (a) asks to find the probability that first roll is not 6.

         P = 5%2F6.



(b)  Question (b) asks to find the probability that NEITHER first NOR second roll is 6.


         P = %285%2F6%29%2A%285%2F6%29 = 25%2F36.    ANSWER

Solved.