100 Blank Cards Riddle
Someone offers you the following deal:
There is a deck of 100 initially blank cards. The dealer is allowed to write ANY positive integer, one per card, leaving none blank. You are then asked to turn over as many cards as you wish. If the last card you turn over is the highest in the deck, you win; otherwise, you lose.
Winning grants you $50, and losing costs you only the $10 you paid to play.
Would you accept this challenge?
There is a deck of 100 initially blank cards. The dealer is allowed to write ANY positive integer, one per card, leaving none blank. You are then asked to turn over as many cards as you wish. If the last card you turn over is the highest in the deck, you win; otherwise, you lose.
Winning grants you $50, and losing costs you only the $10 you paid to play.
Would you accept this challenge?
Hint: Perhaps thinking in terms of one deck is the wrong approach.
Yes!
A sample strategy:
Divide the deck in half and turn over all lower 50 cards, setting aside the highest number you find. Then turn over the other 50 cards, one by one, until you reach a number that is higher than the card you set aside: this is your chosen "high card."
Now, there is a 50% chance that the highest card is contained in the top 50 cards (it is or it isn't), and a 50% chance that the second-highest card is contained in the lower 50. Combining the probabilities, you have a 25% chance of constructing the above situation (in which you win every time).
This means that you'll lose three out of four games, but for every four games played, you pay $40 while you win one game and $50. Your net profit every four games is $10.
Obviously, you have to have at least $40 to start in order to apply this strategy effectively. Did you answer this riddle correctly?
YES NO
A sample strategy:
Divide the deck in half and turn over all lower 50 cards, setting aside the highest number you find. Then turn over the other 50 cards, one by one, until you reach a number that is higher than the card you set aside: this is your chosen "high card."
Now, there is a 50% chance that the highest card is contained in the top 50 cards (it is or it isn't), and a 50% chance that the second-highest card is contained in the lower 50. Combining the probabilities, you have a 25% chance of constructing the above situation (in which you win every time).
This means that you'll lose three out of four games, but for every four games played, you pay $40 while you win one game and $50. Your net profit every four games is $10.
Obviously, you have to have at least $40 to start in order to apply this strategy effectively. Did you answer this riddle correctly?
YES NO
A Man Was Outside Taking A Walk When It Began To Rain
A man was outside taking a walk when it began to rain. He did not have an umbrella and he wasn't wearing a hat. His clothes were soaked, yet not a single hair on his head got wet. How could this happen?
Hint:
Old Man On London Bridge
I met an old man on London bridge,
As the sun set on the ridge,
He tipped his hat and drew his name,
And cheated at the guessing game.
What was the mans name?
As the sun set on the ridge,
He tipped his hat and drew his name,
And cheated at the guessing game.
What was the mans name?
Hint:
Andrew. In the third line, and drew his name. It works better when you say it. Did you answer this riddle correctly?
YES NO
YES NO
Tweety Birds Wife Riddle
Hint:
A Blind Man Named Grandpa Riddle
A blind man named Grandpa has boarded a train to his home. He underwent a successful operation on his eyes and the doctor asked him to open the bandages after 6 hours. On his train journey, he opened the bandages and within seconds commit suicide by jumping off the train.
Why did Grandpa commit suicide despite his eye operation was successful?
Why did Grandpa commit suicide despite his eye operation was successful?
Hint:
When blind man "Grandpa" opened his bandages, the train must be passing through the dark tunnel. The man thought he was still blind and hence commit suicide. Did you answer this riddle correctly?
YES NO
YES NO
A Man And His Boss Have The Same Parents Riddle
Hint:
4 Shots 3 Beers Riddle
A man wakes up, decides he wants to go to the bar. He goes to the bar, orders 4 shots and 3 beers and goes to the bathroom. Comes back from bathroom, orders 3 shots and 4 beers. Drives home, turns off the lights and goes to bed. Next morning, looks out of window, sees something and jumps out of window and kills himself. Why?
Hint:
Like the three shots and four beers and four shots and three beers and the bathroom thing? That stuff doesn't contribute to the car theory, either.
Really the only extra piece of information that does is the fact that he drove home, but I'd say the thing about jumping out the window as his method of suicide specifically points to the lighthouse theory. So it at least evens out. Did you answer this riddle correctly?
YES NO
Really the only extra piece of information that does is the fact that he drove home, but I'd say the thing about jumping out the window as his method of suicide specifically points to the lighthouse theory. So it at least evens out. Did you answer this riddle correctly?
YES NO
A Man Was Born In 1995 Riddle
Hint:
The first aspect that has to be noted in the question is that 1995 or 1953 cannot be specifically taken as years because it is not said that a man was born in the year and died in the certain year.
These numbers can be taken as room numbers of a hospital also.
A man was born in the room number 1995 and died in room number 1953.
It can also be taken as a man born in the year 1995 died in the room number 1953 or vice versa. The possibilities are endless.
We will not consider both the numbers given as years because it is not possible that one dies before one is born. Did you answer this riddle correctly?
YES NO
These numbers can be taken as room numbers of a hospital also.
A man was born in the room number 1995 and died in room number 1953.
It can also be taken as a man born in the year 1995 died in the room number 1953 or vice versa. The possibilities are endless.
We will not consider both the numbers given as years because it is not possible that one dies before one is born. Did you answer this riddle correctly?
YES NO
A Man Was Born In 2003 Riddle
Hint:
Man Born Before His Father Riddle
There was a man who was born before his father, killed his mother, and married his sister. Yet, there was nothing wrong with what he had done. Why?
Hint:
His father was in front of him when he was born, therefore he was born before him. His mother died while giving birth to him. Finally, he grew up to be a minister and married his sister at her ceremony. Did you answer this riddle correctly?
YES NO
YES NO
What Color Is The Bear?
A man builds a house rectangular in shape. All the sides have southern exposure. A big bear walks by. What color is the bear? Why?
Hint:
The bear is white since the house is built on the North Pole. Did you answer this riddle correctly?
YES NO
YES NO
The Crazy Bartender
A man walks into a bar and asks the barman for a glass of water. The barman pulls out a gun and points it at the man. The man says 'Thank you' and walks out. What happened?
Hint:
The man had hiccups. The barman recognised this from his speech and drew the gun in order to give him a shock. It worked and cured the hiccups - so the man no longer needed the water. Did you answer this riddle correctly?
YES NO
YES NO
Birthday In September Riddle
A man born in March has his birthday in September. Although he was orphaned as a young child he grew up and married his father. How is this possible?
Hint:
He was born in the town of March, about 25 miles north of Cambridge, England. He grew up to be the mayor of his town, and performed the wedding ceremony for the head of his local church. Did you answer this riddle correctly?
YES NO
YES NO
Born In B.C. Riddle
Hint:
45 years old.
There is no year 0 so you can add 23 to 23 but you must subtract one to take year 0 out of consideration: 23 + 23 - 1 = 45 years old. In some cultures people are born 1 years old, in this case they would be 46 years old when they die. Did you answer this riddle correctly?
YES NO
There is no year 0 so you can add 23 to 23 but you must subtract one to take year 0 out of consideration: 23 + 23 - 1 = 45 years old. In some cultures people are born 1 years old, in this case they would be 46 years old when they die. Did you answer this riddle correctly?
YES NO
Gingerbread Man Riddle
Hint:
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