SOLUTION: A jar contains 9 blue marbles and 10 red marbles. Drew chooses one marble randomly and then another marble randomly. What is the probability that he picks two red marbles: (a

Algebra ->  Real-numbers -> SOLUTION: A jar contains 9 blue marbles and 10 red marbles. Drew chooses one marble randomly and then another marble randomly. What is the probability that he picks two red marbles: (a      Log On


   

Question 1080924: A jar contains 9 blue marbles and 10 red marbles. Drew chooses one marble randomly and then
another marble randomly. What is the probability that he picks two red marbles:
(a) with replacement? (b) without replacement?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
With replacement,
P=%2810%2F19%29%2810%2F19%29=100%2F361
.
.
.
Without replacement,
P=%2810%2F19%29%289%2F18%29=5%2F19