A bag contains 5 red, 3 brown,6 yellow, and 2 blue marbles. Once a marble is selected, it is not replaced. Find the probability of pulling a red marble, and then a blue marble?
1 Answer
Mar 12, 2018
Explanation:
First establish the probability of pulling out each colour from a full bag.
Where
The probability of pulling out a red marble is
Now the sample space (
Therefore, the probability of pulling out a blue marble is now
To find the probability of fulfilling both of these conditions, we multiply the probabilities: