There is 20 per cent probability of choosing red.
A jar contains four times as many red marbles.
A jar contains 3 yellow marbles 4 red marbles 10 green marbles.
B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3.
A marble is drawn at random from the jar.
What is the probability that the first marble picked at random is blue and that the second marble is green and that the third marble picked is yellow assuming that the marbles are put back into the jar after every time they are picked.
As a guide supposing there are 8 red marbles in a jar containing 40 marbles then the probability of choosing red is 8 40 or 1.
Solution for a jar contains 40 red marbles numbered 1 to 40 and 46 blue marbles numbered 1 to 46.
What is the ratio of white marbles to all marbles.
The ratio of red marbles to blue marbles in a jar is 2 to 5.
5 x7 35 2x7 14 red marbles is this right.
Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles.
T total number of marbles b number of blue marbles g number of green marbles r number of red marbles t 765 t b g r b 2 g 3b r 765 b b 2 3b 765 4 5b b 765 4 5 b 170 there are 170 blue marbles.
If a marble is drawn from the jar at random what is the probability that the marble will be white.
The jar contains 4 red marbles 10 blue marbles 7 green marbles and 6 yellow marbles.
Given that 4 of the marbles are green 60 of the marbles are blue and the rest are red how many red marbles are in the jar 1 see answer lydy6625 is waiting for your help.
A jar contains 4 black marbles and 3 red marbles.
If there are 35 blue marbles in the jar how many red marbles are there.
There are 55 marbles 25 of which are not red p getting a color other than red p 25 55 455 probability of this happening 3 times in a row is.
Add your answer and earn points.
You randomly choose a marble from a jar.
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.
A draw the tree diagram for the experiment.
A jar contains 125 marbles.
Probability examples a jar contains 30 red marbles 12 yellow marbles 8 green marbles and 5 blue marbles what is the probability that you draw and replace marbles 3 times and you get no red marbles.
Find the probability of not choosing a blue marble.
And 4 blue marbles.
