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 Suit In A Deck Of Cards
I'm red but Im not a strawberry
I'm a shape but Im not a square
I'm part of your body but Im not your mouth
I'm a suit in a deck of cards but Im not a spade
I'm used to say I love you but Im not a diamond
I'm a?
I'm a shape but Im not a square
I'm part of your body but Im not your mouth
I'm a suit in a deck of cards but Im not a spade
I'm used to say I love you but Im not a diamond
I'm a?
Hint:
Credit Card Jail Riddle
Hint:
Sailors Playing Cards Riddle
Hint:
Pick A Card Any Card
Hint:
5 of clubs.
Explanation:
The 5th number is equal to the sum of first four number (recursively until its value <=13). The suit will be same as of biggest card.
eg Row1:
5 + 7 + 3 + 11 = 26 = 8
Since Maximum value is Jack of hearts, therefore, we will get 8 of hearts
Similarly for the last row
12+13+2+5 = 32 = 5
Since Maximum value is King of a club, therefore, we will get 5 of a club. Did you answer this riddle correctly?
YES NO
Explanation:
The 5th number is equal to the sum of first four number (recursively until its value <=13). The suit will be same as of biggest card.
eg Row1:
5 + 7 + 3 + 11 = 26 = 8
Since Maximum value is Jack of hearts, therefore, we will get 8 of hearts
Similarly for the last row
12+13+2+5 = 32 = 5
Since Maximum value is King of a club, therefore, we will get 5 of a club. Did you answer this riddle correctly?
YES NO
Precious Stones In A Pack Of Cards Riddle
Hint:
I Born In March
"Lifes funny", said an old friend when I bumped into him the other day. "Listen to this, I was born in March, yet I celebrate my birthday in August, and last February I married my mother". How is this possible?
Hint:
He was born in August in a town called March, became a priest and married his widowed mother to her second husband in February. Did you answer this riddle correctly?
YES NO
YES NO
Triplets Of August Riddle
Hint: Answer lies in August.
Pirate Report Card Riddle
Hint:
The Left Side Of The Cake
Hint:
An Every Year Gift Riddle
Hint:
Susan's Headstand Riddle
Hint:
Candles On A Cake Riddle
Hint:
BDay Clam Riddle
Hint:
An Elf's Favorite Cake Riddle
Hint:
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