What is the probability that exactly two of the marbles are red.
Probability marbles in a bag without replacement.
A bag contains 5 red and 3 blue marbles.
The problem asks for the probability of rr or bb.
Tool to make probabilities on picking objects.
What is the probability that all the marbles are red.
A bag contains 7 red marbles 9 white marbles and 9 blue marbles.
For example a marble may be taken from a bag with 20 marbles and then a second marble is taken without replacing the first marble.
A bag contains 3 red marbles and 4 blue marbles.
Calculation of probabilities of drawing objects balls beads cards etc in a box bag drawer deck etc with and without replacement is a common exercise in probability.
The events are dependent the chances change.
You draw 5 marbles out at random without replacement.
The probability of an outcome of an event is the ratio of the number of ways that.
Determine the probability that at least one is red.
The events are independent the chances don t change without replacement.
A bag contains eight green marbles and four blue marbles.
A marble is taken at random and replaced.
P at least one red p rr or rb or br alternatively p at least one red 1 p no reds complementary events 1 p bb and so on.
Two marbles are drawn simultaneously from the bag.
If we replace the marbles in the bag each time then the chances do not change and the events are independent.
Work out the probability that the two marbles taken from the bag are the same color.
In some experiments the sample space may change for the different events.
Then angelina picks a marble.
Taylor draws two marbles in succession without replacing them in the bag.
Drawing simultaneously is the same as sampling without.
The sample space for the second event is then 19 marbles instead of 20.
He picks a green marble.
What is probability without replacement or dependent probability.
Marc is choosing a marble from a bag containing 6 red marbles 3 blue marbles and 5 green marbles.
Total number of marbles in the bag is 3 4 7.