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.
A bag contains red and blue marbles two marbles are drawn without replacement.
Determine the probability that at least one is red.
A bag contains 3 white 4 black and 2 red marbles.
A bag contains 4 red marbles and 5 blue marbles.
Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles.
On the other hand there are 9 choices for the first marble and 8.
A bag contains red and blue marbles.
The probability of selecting a red marble on the first draw is 0 5.
A jar contains 4 black marbles and 3 red marbles.
P both red frac binom22.
A draw the tree diagram for the experiment.
The first marble drawn is blue and the second is red.
Can someone please point why my solution is wrong.
Two marbles are drawn without replacement.
Number the red marbles 1 4 and the blue marbles 5 9.
Drawing simultaneously is the same as sampling without.
What is the probability of selecting a blue marble on the second draw given that the first marble drawn was red.
A bag contains 5 red and 3 blue marbles.
Two marbles are drawn from the bag.
The first marble drawn is red and the second is blue.
Then there are 4 possibilities for drawing the first red marble and 3 possibilities for drawing the second red marble.
B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3.
P both red p second is red.
The probability of selecting a red marble and then a blue marble is 0 28.
Determine the probability that.
Two marbles are drawn simultaneously from the bag.
Two marbles are drawn without replacement.
Two marbles are randomly drawn without replacement.