You draw 3 marbles out at random without replacement.
A bag contains 8 red marbles 6 blue marbles.
B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3.
We will assume that only two marbles are drawn from the bag and hence there are two cases.
Find the following probabilities and round to 4 decimal places a.
A bag contains 8 blue marbles 6 red marbles and 4 green marbles.
The probability that all the marbles are red is b.
So i could pick that red marble or that red marble.
A jar contains 4 black marbles and 3 red marbles.
Find p red and blue.
A bag contains 8 red marbles 7 white marbles and 7 blue marbles.
Given that you have bb.
So this is all the possible outcomes.
Randomly choose two marbles one at a time and without replacement.
C the probability that the second marble is blue.
There s two green marbles in the bag.
A bag contains 8 red marbles 4 white marbles and 5 blue marbles.
And then there s one blue marble in the bag.
The first marble is returned in the bag before drawing the second.
If three marbles are drawn out of the bag what is the probability to the nearest 1000th that all three marbles drawn will be blue.
There s two red marbles in the bag.
A draw the tree diagram for the experiment.
What is the probability of selecting a red marble replacing it in the bag and then selecting a green marble.
There s one blue marble.
B the probability that both are the same color.
So i could pick that green marble or that green marble.
There are 8 6 48 ways of drawing blue then red so p 8 6 18 18 4 3 9 9 4 3 9 4 27 0 148148148 or just under 15.
A bag contains 8 red marbles 6 blue marbles and 3 green marbles.
The probability that none of the marbles are red is.
You have 8 6 4 18 marbles each assumed to have a 1 18 probability of being drawn.
Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles.
These are clearly all yellow.
The first marble is not returned in the bag before drawing the second.