SOLUTION: A box contains 5 white and 4 blue marbles. Two marbles are drawn from the box in succession without replacement. What is the probability of getting a white on the second draw give

Algebra ->  Probability-and-statistics -> SOLUTION: A box contains 5 white and 4 blue marbles. Two marbles are drawn from the box in succession without replacement. What is the probability of getting a white on the second draw give      Log On


   

Question 1195507: A box contains 5 white and 4 blue marbles. Two marbles are drawn from the box in succession without replacement. What is the probability of getting a white on the second draw given that it is blue on the first draw?
Answer by math_tutor2020(3817) About Me  (Show Source):
You can put this solution on YOUR website!

We know 100% that the first marble is blue.
There are 4-1 = 3 blue left.

5 white + 3 blue = 8 total

5/8 is the probability of getting a white marble on the second selection, since we have 5 white out of 8 left over.

Answer: 5/8