The Emperor's Proposition Riddle
You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles and 2 empty bowls. He then says, "Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die."
How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?
How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?
Hint: The answer does not guarantee 100% you will chose a white marble, but you have a much better chance.
Place 1 white marble in one bowl, and place the rest of the marbles in the other bowl (49 whites, and 50 blacks).
This way you begin with a 50/50 chance of choosing the bowl with just one white marble, therefore life! BUT even if you choose the other bowl, you still have ALMOST a 50/50 chance at picking one of the 49 white marbles. Did you answer this riddle correctly?
YES NO
This way you begin with a 50/50 chance of choosing the bowl with just one white marble, therefore life! BUT even if you choose the other bowl, you still have ALMOST a 50/50 chance at picking one of the 49 white marbles. Did you answer this riddle correctly?
YES NO
The 41st President
Hint:
Grover Cleveland held office during 2 nonconsecutive terms. He was our 22nd and 24th president. Did you answer this riddle correctly?
YES NO
YES NO
Ask Me To Prom
Hint:
Getting Ready For Prom
A boy had just got out of the shower and getting ready for his prom, shaved, and with cologne and there was going to be a after party and his mom, and dad said be home for the next sunrise and was home for the next sunrise but with a full grown beard how can this be?
Hint:
Five Prom Couples Riddle
Five couples went to the prom as a group. The boys' names were Mark, Quintin, Jim, Bob, and James. The girls' names were Amanda, Betty, Susan, Jessica, and Jasmin. Each couple wore matching colors of either blue, yellow, red, green, or pink. Match the dates and the color they are wearing.
1) Two couples have the same first letter in their name. One of those letters is "B".
2) Susan wore red and Jessica wore blue.
3) Susan has more letters in her name than her date does.
4) Neither Mark nor Quintin went with Jasmin, who was wearing yellow.
5) Amanda went with Jim and they did not wear green.
1) Two couples have the same first letter in their name. One of those letters is "B".
2) Susan wore red and Jessica wore blue.
3) Susan has more letters in her name than her date does.
4) Neither Mark nor Quintin went with Jasmin, who was wearing yellow.
5) Amanda went with Jim and they did not wear green.
Hint:
Mark and Susan wore red.
Quintin and Jessica wore blue.
Jim and Amanda wore pink.
Bob and Betty wore green.
James and Jasmin wore yellow. Did you answer this riddle correctly?
YES NO
Quintin and Jessica wore blue.
Jim and Amanda wore pink.
Bob and Betty wore green.
James and Jasmin wore yellow. Did you answer this riddle correctly?
YES NO
Pearl Problems Riddle
"I'm a very rich man, so I've decided to give you some of my fortune. Do you see this bag? I have 5001 pearls inside it. 2501 of them are white, and 2500 of them are black. No, I am not racist. I'll let you take out any number of pearls from the bag without looking. If you take out the same number of black and white pearls, I will reward you with a number of gold bars equivalent to the number of pearls you took."
How many pearls should you take out to give yourself a good number of gold bars while still retaining a good chance of actually getting them?
How many pearls should you take out to give yourself a good number of gold bars while still retaining a good chance of actually getting them?
Hint: If you took out 2 pearls, you would have about a 50% chance of getting 2 gold bars. However, you can take even more pearls and still retain the 50% chance.
Take out 5000 pearls. If the remaining pearl is white, then you've won 5000 gold bars! Did you answer this riddle correctly?
YES NO
YES NO
The Prime Number Riddle
Two hundred people in an auditorium are asked to think of a single digit number from 1 to 9 inclusive and write it down. All those who wrote down a prime number are now asked to leave. Ninety people remain behind in the hall. How many of these are expected to have written down an odd number?
Hint: Remember that 1 is not a prime number.
Those that remain behind must have written {1,4,6,8,9} and from this only {1,9} are odd. The probability of an odd number is thus 2/5.
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
Expected number of odds is 2/5 * 90 = 36 Did you answer this riddle correctly?
YES NO
Volleyball Player At Prom Riddle
Hint:
Old Man Ankit
An old man ankit lives alone in a flat. Because of his age , he is not able to move comfortably and hence most of the things used to be delivered to his house.
On Friday while delivering the mail , postman feels something suspicious in the flat and try to look inside through the key hole and he saw a blood filled body of the old man.
CID arrived the scene.
On the outside of flat , he found two bottles of warm milk , Tuesday newspaper, some unopened mails , some gifts.
CID waste no time to find the murderer.
Who was the murderer ?
On Friday while delivering the mail , postman feels something suspicious in the flat and try to look inside through the key hole and he saw a blood filled body of the old man.
CID arrived the scene.
On the outside of flat , he found two bottles of warm milk , Tuesday newspaper, some unopened mails , some gifts.
CID waste no time to find the murderer.
Who was the murderer ?
Hint:
Newspaper delivery man was the murderer because of absence of Wednesday and Thursday missing newspaper.
This indicates he already know that there is no one to read it. Did you answer this riddle correctly?
YES NO
This indicates he already know that there is no one to read it. Did you answer this riddle correctly?
YES NO
A Man Found Dead Riddle
A man was found dead in his study. He was slumped over his desk and a gun was in his hand. There was a cassette recorder on his desk. When the police entered the room and pressed the play button on the tape recorder they heard: I cant go on. I have nothing to live for. Then there was the sound of a gunshot.
How did the detective immediately know that the man had been murdered and it wasnt a suicide?
How did the detective immediately know that the man had been murdered and it wasnt a suicide?
Hint:
Who Killed The Old Man Riddle
An old man lives alone in a house. Because of his age, he is not able to move comfortably and hence most of the things used to be delivered to his house.
On Friday while delivering the mail, the postman feels something suspicious in the house and tries to look inside through the key hole and he saw the blood filled body of the old man.
The police arrived the scene.
Outside the house, he found two bottles of warm milk, Tuesday newspaper, some unopened mail, and some gifts.
The police wasted no time to find the murderer.
Who killed the old man?
On Friday while delivering the mail, the postman feels something suspicious in the house and tries to look inside through the key hole and he saw the blood filled body of the old man.
The police arrived the scene.
Outside the house, he found two bottles of warm milk, Tuesday newspaper, some unopened mail, and some gifts.
The police wasted no time to find the murderer.
Who killed the old man?
Hint:
The newspaper delivery man, because there was no Wednesday, Thursday or Friday newspaper. He knew there was no one home to read it! Did you answer this riddle correctly?
YES NO
YES NO
Football Game Predictions Riddle
A man makes a claim that he can predict the exact score of every football game, before it begins. And he's always right. How's that possible?
Hint:
He says the score before every football game begins is 0-0. Did you answer this riddle correctly?
YES NO
YES NO
Rescuing The Princess
I roam through the land hoping to rescue my love. I search high and low and will stomp on you if you get in my way. What am I?
Hint:
Mario, from Super Mario Brothers video game by Nintendo. He roams the land searching for the princess and his primary method of getting rid of folks is to stomp on them.
Thanks to Rowan for figuring this out. Did you answer this riddle correctly?
YES NO
Thanks to Rowan for figuring this out. Did you answer this riddle correctly?
YES NO
The President's Army Riddle
Hint:
Prison Visitor Riddle
A man in prison has a visitor. Afterward a guard asks the inmate who the visitor was to him. The inmate replies: "brothers and sisters I have none, but that man's father is my father's son." Who was the visitor to the inmate?
Hint:
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