The diagram below shows the contents of a jar from which you select marbles at random.
A jar contains red white and blue marbles.
The probability to randomly draw a marble is 20c1 the probability to draw a white marble from 10 white marbles is 10c1 thus the probability to draw a white marble out of 20 is.
Suppose you pick a marble at random without looking.
A jar contains 3 white marbles 4 red marbles and 5 blue marbles.
You then pick.
So the probability of white is 5 11.
P red blue 2 p blue and blue answer by edwin mccravy 18224 show source.
A jar contains 5 blue marbles 8 red marbles 4 white marbles and 3 purple marbles.
So the probability of drawing red is 3 12 or 1 4 reduced.
You roll a fair die if you get a 2 or a 3 you pick a random marble from jar a and put it in jar b.
If a marble is drawn from the jar at random what is the probability that the marble will be white.
A bag of marbles contains 5 red 3 blue 2 green and 2 yellow marbles.
A jar contains 3 red marbles 7 green marbles and 10 white marbles.
A jar contains 2 red marbles 6 blue marbles 4 white marbles and 12 black marbles.
Now if you take out one red marble then there are 11 now in the jar.
A jar contains nine blue marbles eight yellow marbles 11 black marbles and 12 red marbles.
4 red 6 white and 10 blue.
Rr rw wr ww p r 3 4 p w 1 4 since the marbles are drawn with replacements p rr 3 4 3 4 9 16 p rw 3 4 1 4 3 16 p w.
Asked by ana on december 3 2012.
A jar contains 20 marbles.
What is the ratio of white marbles to all marbles.
This random experiment has four possibilities.
Find the probability of each event.
Find the probability of choosing the given marbles without replacement.
If you remove marbles one at a time randomly what is the minimum number that must be removed to be certain that you have at least 2 marbles of each colour.
Write your answer as a fraction in simplest form.
Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles.
Two marbles are drawn without replacement.
And there are still 5 white marbles.
Suppose r denotes a red marble and w a white marble.
B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3.
There are two jars a and b.
A jar contains 4 black marbles and 3 red marbles.