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.
Yeah i probably shouldn t have even bothered with the picture.
1 you have 9 marbles as seen.
One of the marbles was supposed to be black and one was supposed to be blue.
If jar a is selected you have 100 chance of selecting a red marble.
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.
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.
Put one red marble in one jar a and the remainder in the other jar b.
If jar b is selected you have 49 99 chance of selecting a red marble.
Arrangements of red blue marbles.
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.
Seems tricky at first right.
You have 50 red marbles and 50 blue marbles other wise identical.
The remaining marble is slightly heavier than the others.
The king placed 2 marbles in a jar that was glued to a table.
Let p blue probability of picking a blue marble.
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.
2 8 of them are exactly the same weight.
3 you are allowed to use set the scale twice in total.
Answer to riddle 68.
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.
You don t know which is which.
So now we can place remaining 49 red marbles in jar b so it increases the prob of getting red marbles in jar b.
This will give you just about a 75 chance of picking a blue marble.
In any case on to the riddle.
You will be blindfolded and the bowls and marbles will be thoroughly mixed.
Put one blue marble in one jar and put the rest of the marbles in the other jar.
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.
The emperor offers you a chance to live by playing a simple game.
Jar 1 contains 1 blue marble and jar 2 contains 99 blue marbles and 100 red marbles.
Given that the number of red and blue marbles are the same you would tend to think that the odds are 50 50.
Riddles good riddles hard riddles iq riddles logic riddles previous riddle i have one you have one.
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.
A king decided to let a prisoner try to escape the prison with his life.
Next riddle middle of nowhere.
