The Card Trick Riddle
A couple had to take shelter in a hotel for they could not proceed their journey in the rain. Having nothing to do at all, they started playing cards. Suddenly there was a short circuit and the lights went off. The husband inverted the position of 15 cards in the deck (52 cards normal deck) and shuffled the deck.
Now he asked his wife to divide the deck into two different piles which may not be equal but both of them should have equal number of cards facing up. There was no source of light in the room and the wife was unable to see the cards.
For a certain amount of time, she thought and then divided the cards in two piles. To the husbands astonishment, both of the piles had equal number of cards facing up.
How did she do it?
Now he asked his wife to divide the deck into two different piles which may not be equal but both of them should have equal number of cards facing up. There was no source of light in the room and the wife was unable to see the cards.
For a certain amount of time, she thought and then divided the cards in two piles. To the husbands astonishment, both of the piles had equal number of cards facing up.
How did she do it?
Hint:
The answer is very simple. All she had to do is take the fifteen cards from the top and reverse them. This would make another pile out of that and there will be two piles - one of 15 cards and one of 37 cards. Also both of them will have the same number of inverted cards.
Just think about it and if the mathematical explanation will help you understand better, here it is.
Assume that there were p inverted cards initially in the top 15 cards. Then the remaining 37 cards will hold 15-p inverted cards.
Now when she reverses the 15 cards on the top, the number of inverted cards will become 15-p and thus the number of inverted cards in both of the piles will become same. Did you answer this riddle correctly?
YES NO
Just think about it and if the mathematical explanation will help you understand better, here it is.
Assume that there were p inverted cards initially in the top 15 cards. Then the remaining 37 cards will hold 15-p inverted cards.
Now when she reverses the 15 cards on the top, the number of inverted cards will become 15-p and thus the number of inverted cards in both of the piles will become same. Did you answer this riddle correctly?
YES NO
Needing And Not Knowing Riddle
Riddle me this
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?
Hint:
Discovered By You Riddle
The letters of the alphabet but only just a few;
It's hard to say if I was invented or just discovered by you.
What am I?
It's hard to say if I was invented or just discovered by you.
What am I?
Hint:
The Climbing Trip Riddle
A couple went on for a climbing trip. But only the husband returned from the vacation and said that his wife slipped off while climbing and died. On investigating, the local sheriff arrested him saying, 'Your travel agent called. You murdered your wife.'
The man did not inform anyone about the trip. Then how did the agent was so sure that it is a murder?
The man did not inform anyone about the trip. Then how did the agent was so sure that it is a murder?
Hint:
The man bought only one way ticket for his wife whereas he bought two way ticket for himself. It means that he was sure that he will be returning alone. Did you answer this riddle correctly?
YES NO
YES NO
The First Fireworks Riddle
Hint:
The Chinese invented fireworks. The Chinese New Year is celebrated on the 2nd New Moon after the winter solstice, determined by the Lunar Calendar. Did you answer this riddle correctly?
YES NO
YES NO
Innovating Golf
My invention can be found on a golf course. I come in many colors and help golfers tee off! What did I invent?
Hint:
Lawn Mower Riddle
Hint:
Keeping You Cool
My name is Frederick McKinley Jones, and I invented the machine that keeps you nice and cool on hot summer days. What did I invent?
Hint:
Going To High Places
My invention makes it easier for people to get to high places without climbing stairs. What did I invent?
Hint:
Touch Tone Pioneer
This African American pioneer fostered the invention of touch tone phones and the portable fax. Who is it?
Hint:
America's First Clock Riddle
Hint:
Swiveling Chairs Riddle
Hint:
A Round House
The police are called to a round house where a man is found dead with a knife wound to the chest. The police investigate and narrow down the suspects to three people: The maid, the wife, and the butcher. When questioned for alibis, the wife said, "I was out buying a dress with my friends, and I found my husband dead upon my return." The butcher said, "I was searching the cupboards for some vegetables to serve for lunch." The maid said, "I was in the other room, dusting the corners." The maid was then arrested. How did the police know it was her?
Hint:
Puddle On The Ground
If a the police were investigating a suicide and all there was was a man hanging from the roof a collapsed wood box and a puddle on the ground and a match found inside the box how did this man die.
Hint:
He was standing on a box with ice in it he threw a match in the hole in the box it eventually melted the ice and made the wooden box collapse Did you answer this riddle correctly?
YES NO
YES NO
Gun Powder Riddle
Hint:
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