A Jar Contains Four Times As Many Red Marbles

You randomly choose a marble from a jar.

A jar contains four times as many red marbles.

If a marble is drawn from the jar at random what is the probability that the marble will be white. B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3. Solution for a jar contains 40 red marbles numbered 1 to 40 and 46 blue marbles numbered 1 to 46. A jar contains 2 red marbles 6 blue marbles 4 white marbles and 12 black marbles.

A draw the tree diagram for the experiment. 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. Add your answer and earn points. A marble is drawn at random from the jar.

Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles. Two marbles are drawn without replacement. A jar contains 125 marbles. If there are 35 blue marbles in the jar how many red marbles are there.

A jar contains 4 black marbles and 3 red 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. Find the probability of not choosing a blue marble. What is the ratio of white marbles to all marbles.

A jar contains 3 yellow marbles 4 red marbles 10 green marbles. 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. 5 x7 35 2x7 14 red marbles is this right. 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.

The jar contains 4 red marbles 10 blue marbles 7 green marbles and 6 yellow marbles. And 4 blue marbles. There is 20 per cent probability of choosing red. The ratio of red marbles to blue marbles in a jar is 2 to 5.

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.