Marble Jars Riddle

1 2 chance we pick jar a 50 50 chance we pick a red marble 1 2 chance we pick jar b 0 50 chance we pick a red marble.

Marble jars riddle.

Put one blue marble in one jar and put the rest of the marbles in the other jar. So now we can place remaining 49 red marbles in jar b so it increases the prob of getting red marbles in jar b. Put one red marble in one jar a and the remainder in the other jar b. You are a prisoner sentenced to death.

The emperor offers you a chance to live by playing a simple game. If we select jar a then getting a red marble is guaranteed but it will also be guaranteed if there is only one red marble in that jar then also the probability of getting a red marble from jar a is 1 1 1. Yeah i probably shouldn t have even bothered with the picture. A king decided to let a prisoner try to escape the prison with his life.

If jar b is selected you have 49 99 chance of selecting a red marble. In any case on to the riddle. You don t know which is which. You would try different combinations such as 25 of each colored marble in a jar or putting all red marbles in one jar and all the blue in the other.

Riddles good riddles hard riddles iq riddles logic riddles previous riddle i have one you have one. Jar 1 contains 1 blue marble and jar 2 contains 99 blue marbles and 100 red marbles. You will be blindfolded and the bowls and marbles will be thoroughly mixed. The king placed 2 marbles in a jar that was glued to a table.

Seems tricky at first right. If jar a is selected you have 100 chance of selecting a red marble. Given that the number of red and blue marbles are the same you would tend to think that the odds are 50 50. Next riddle middle of nowhere.

1 you have 9 marbles as seen. Let p blue probability of picking a blue marble. Answer to riddle 68. And the probability of picking a red marble from any jar is the number of red marbles in the jar over the total number of marbles in the jar.

If the first marble you pulled out from the box labeled both is a white marble then you solve the problem in the same general way. You would try different combinations such as 25 of each colored marble in a jar or putting all red marbles in one jar and all the blue in the other. 3 you are allowed to use set the scale twice in total. You can divide them however you want as long as all the marbles are in the bowls.

He gives you 50 black marbles 50 white marbles and 2 empty bowls and instructs you to divide the 100 marbles into the two bowls. This will give you just about a 75 chance of picking a blue marble. One of the marbles was supposed to be black and one was supposed to be blue. You would still end up with a chance of 50.

Arrangements of red blue marbles. With a 50 chance of selecting jar a and a 50 chance of selecting jar b the odds become 50 50 49 99 74 7474 or 148 198.