Marbles In A Jar Probability

A jar contains 4 black marbles and 3 red marbles.

Marbles in a jar probability.

So the next time. What is the maximum probability. If a marble is drawn at random from the jar the probability that it is green is 32. If we got a red marble before then the chance of a blue marble next is 2 in 4.

The chance is 2 in 5 but after taking one out the chances change. Place the possible card in front of the jar. Total number of marbles 23 4 27 marbles p green marble of green marbles of marbles total 4 27 0 148 so the probability is 4 27 which is about a 14 8 chance. You can arrange the marbles however you like but each marble must be in a jar.

A draw the tree diagram for the experiment. Finally multiply the probabilities and reduce to get 1 19. So the probability of getting a blue marble is 13 42. 13 is a prime number and 42.

Have the children take turns answering the questions and placing the probability cards in front of each jar after each of the questions. Remember there is one less marble in the jar. For example if the answer is 2 3 the response should be 0 67. P getting a color other than red p 25 55 455 probability of this happening 3 times in a row is found by 455 455 455 094 example 2.

What is the probability that you pick 3 green no red 1 of each at least 1 blue marble if a jar contains 5 blue 3 green and 4 red marbles. Find the probability of picking green 4 20 then find the probability of picking blue 5 19. The total number of marbles in the second jar is 42 marbles and the total number of blue marbles in the jar is 13. Pose questions to the children about each of the jars and the probability of picking certain colored marbles.

Two marbles are drawn without replacement. B find probabilities for p bb p br p rb p ww p at least one red p exactly one red.