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
Bring Me Back
Hint:
Steals $100 Riddle
Hint:
A Blind Man Named Grandpa Riddle
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:
A Woman Was Born In 1975 And Died In 1975 Riddle
Hint:
In the given question, it is not mentioned that the given number 1975 is an year.
So, It could be the hospital room number where she was born and then died at same(1975) room number in some hotel.
It could be the postal code of the area where she was born and died in the same place at the age 22 years. Did you answer this riddle correctly?
YES NO
So, It could be the hospital room number where she was born and then died at same(1975) room number in some hotel.
It could be the postal code of the area where she was born and died in the same place at the age 22 years. Did you answer this riddle correctly?
YES NO
A Boy Was 15 In 1990 Riddle
Hint:
The boy lived before Christ. Therefore, in 1995 B.C. he was 10 years old, and in 1990 he turned 15. Did you answer this riddle correctly?
YES NO
YES NO
A Man Was Born In 2003 Riddle
Hint:
Man Born Before His Father Riddle
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
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
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
Gingerbread Man Riddle
Hint:
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