SOLUTION: Six blue books and three red books in a bag. If three (3) books are selected and replaced. Find the probability that at least one is red.

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: Six blue books and three red books in a bag. If three (3) books are selected and replaced. Find the probability that at least one is red.      Log On

Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!
Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!

   

Question 47514: Six blue books and three red books in a bag. If three (3) books are selected and replaced. Find the probability that at least one is red.
Answer by stanbon(48568) About Me  (Show Source):
You can put this solution on YOUR website!
Six blue books and three red books in a bag. If three (3) books are selected and replaced. Find the probability that at least one is red.
Prob(at least one red) = 1 - Prob(none red)
Prob( none red) = Prob (blue,blue,blue)= (6/9)^3=0.296...
Therefore Prob (at least one red) = 1-0.296...=0.70...
Cheers,
Stan H.