2 Burning Candles
There are two candles. Both will only burn exactly for an hour. How will you use these two candles to measure forty-five minutes?
Hint:
Burn one candle from both the ends and simultaneously burn the other candle from just one end. In half an hour, the first candle would have been burnt fully and the second one would have been burnt half. Now light the other end of the second candle as well. In this way, the second candle will take only half the time (30/2 = 15) to burn fully.
Thus, you will have measured forty five minutes. Did you answer this riddle correctly?
YES NO
Thus, you will have measured forty five minutes. Did you answer this riddle correctly?
YES NO
Losing A New York Bet
You are hanging around in NYC when a person approaches you.
"Leaving the bald people aside, I can bet a hundred bucks that there are two people living in NYC who have same number of hairs on their heads," he says to you.
You say that you will take the bet. After talking to the man for a couple of minutes, you realize that you have lost the bet.
What did the person say to you that proved his statement ?
"Leaving the bald people aside, I can bet a hundred bucks that there are two people living in NYC who have same number of hairs on their heads," he says to you.
You say that you will take the bet. After talking to the man for a couple of minutes, you realize that you have lost the bet.
What did the person say to you that proved his statement ?
Hint:
This problem can be best solved using the pigeonhole principle.
The argument will go like this:
Assume that all the non-bald people in NYC have different number of hairs on their head. The population is about 9 million and let us assume that there are 8 million among them who are not bald.
Now, those 8 million people need to have different number of hairs. On an average, people have just 100, 000 hairs on their head. If we keep on assuming that there is someone with just one hair, someone with two, someone with three and so on, there will be 7, 900, 00 other people left who will have more than 100, 000 hairs on their head and need different number of hairs.
Now, as per this assumption, if we keep increasing one hair for each person, to make everybody hair different in numbers, we will come across someone with 8, 000, 000 hairs. But that is practically impossible (even 1, 000, 000 is impossible). Thus there must be two people who are having same number of hairs. Did you answer this riddle correctly?
YES NO
The argument will go like this:
Assume that all the non-bald people in NYC have different number of hairs on their head. The population is about 9 million and let us assume that there are 8 million among them who are not bald.
Now, those 8 million people need to have different number of hairs. On an average, people have just 100, 000 hairs on their head. If we keep on assuming that there is someone with just one hair, someone with two, someone with three and so on, there will be 7, 900, 00 other people left who will have more than 100, 000 hairs on their head and need different number of hairs.
Now, as per this assumption, if we keep increasing one hair for each person, to make everybody hair different in numbers, we will come across someone with 8, 000, 000 hairs. But that is practically impossible (even 1, 000, 000 is impossible). Thus there must be two people who are having same number of hairs. Did you answer this riddle correctly?
YES NO
The Fitness Center Riddle
Two pro athletes decided to work out. At 6:00 pm, the athletes began the workout at their fitness center. One ran 10 miles at 10 miles per hour, and one cycled 6 miles at 6 miles per hour. Then they both ran at 2.5 miles an hour for 15 minutes. The athletes never took any breaks, and they started at the same time and place. How is it possible that they ended at the same place?
Hint:
They were at the fitness center the whole time. They ran and cycled on exercise equipment. Did you answer this riddle correctly?
YES NO
YES NO
My Father's Son Riddle
A man walks into an art museum and stares at a painting.When a guard walks up and ask him why he is so interested in the painting he responds with "brothers and sisters I have none but that man's father is my father's son" who is the man in the painting?
Hint:
3 Steaks Riddle
It takes 10 minutes to fry one steak - 5 minutes from each side. Two steaks can fit on a pan. What is the shortest possible time to fry 3 steaks?
Hint: You can start frying a steak take it off the pan and finish it later.
Lost Head Riddle
Hint:
Throw Away Gray Riddle
Hint: An eight letter word
Not A Dime Riddle
A man wants to buy a used car. He finds a beautiful Buick for $9500, but he buys it without paying a dime.
How did he manage this?
How did he manage this?
Hint:
Related Strangers Riddle
A man gets off the bus looking for an address and approaches a couple walking in the same direction for directions. The woman says theyre going that way and take him. Along the way the man asks if theyre related. The woman grins and says, Were not strangers. This mans mother is my mothers mother-in-law. The man is confused but doesnt say anything. When he gets back home he tells his wife about the conversation and she cant figure it out either. They decide to ask their lawyer and he eventually works it out with pen and paper. How are the couple related?
Hint:
The couple is either a man and his daughter or an uncle and his niece. Did you answer this riddle correctly?
YES NO
YES NO
A Farmers Three Sons
A farmer lived in a small village. He had three sons. One day he gave $100 dollars to his sons and told them to go to market.
The three sons should buy 100 animals for $100 dollars. In the market there were chickens, hens and goats.
Cost of a goat is $10, cost of a hen is $5 and cost of a chicken is $0.50.
There should be at least one animal from each group. The farmers sons should spend all the money on buying animals. There should be 100 animals, not a single animal more or less!
What do the sons buy?
The three sons should buy 100 animals for $100 dollars. In the market there were chickens, hens and goats.
Cost of a goat is $10, cost of a hen is $5 and cost of a chicken is $0.50.
There should be at least one animal from each group. The farmers sons should spend all the money on buying animals. There should be 100 animals, not a single animal more or less!
What do the sons buy?
Hint:
They purchased 100 animals for 100 dollars.
$10 spent to purchase 1 goat.
$45 spent to purchase 9 hens.
$45 spent to purchase 90 chickens.
Totally they spent $100 and purchased 100 animals. Did you answer this riddle correctly?
YES NO
$10 spent to purchase 1 goat.
$45 spent to purchase 9 hens.
$45 spent to purchase 90 chickens.
Totally they spent $100 and purchased 100 animals. Did you answer this riddle correctly?
YES NO
Cakes For Grandma Riddle
You are on your way to visit your Grandma, who lives at the end of the valley. It's her birthday, and you want to give her the cakes you've made.
Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.
How many cakes do you have to leave home with to make sure that you arrive at Grandma's with exactly 2 cakes?
Between your house and her house, you have to cross 7 bridges, and as it goes in the land of make believe, there is a troll under every bridge! Each troll, quite rightly, insists that you pay a troll toll. Before you can cross their bridge, you have to give them half of the cakes you are carrying, but as they are kind trolls, they each give you back a single cake.
How many cakes do you have to leave home with to make sure that you arrive at Grandma's with exactly 2 cakes?
Hint:
2: At each bridge you are required to give half of your cakes, and you receive one back. Which leaves you with 2 cakes after every bridge. Did you answer this riddle correctly?
YES NO
YES NO
Magic Under Water Riddle
A magician was boasting one day at how long he could hold his breath under water. His record was 6 minutes. A kid that was listening said, "that's nothing, I can stay under water for 10 minutes using no types of equipment or air pockets!" The magician told the kid if he could do that, he'd give him $10,000. The kid did it and won the money. Can you figure out how?
Hint:
The kid filled a glass of water and held it over his head for 10 minutes. Did you answer this riddle correctly?
YES NO
YES NO
The Forgetful Camping Trip
You go camping and realize you forgot your sleeping bag. You get it come back and then realize you forgot your flashlight. You go and get it, but when you come back you find your sleeping bag is missing. You then find out you forgot your tent. When you go back and get it you see your sleeping bag, get it and leave your tent. You go back to the camp site remembering you left your tent at home. You also come to see your flashlight is now missing. You get your tent and see your flashlight, you get that too. You then see your sleeping bag is gone. You are so exhausted you leave it at home. Why does every thing keep going missing?
Hint:
You bring your sleeping bag home when you realize you forgot your flashlight. You leave your sleeping bag at home. You realize you did not bring your tent, go home with you flashlight. Instead of picking up your tent you see your sleeping bag and take that instead leaving your tent and flashlight at home. You go back when you get to camp because you now need your flashlight and tent. You bring your sleeping bag. And when you get your tent and flashlight you leave your sleeping bag. Every time you bring something to the camp site you leave what you had there at home. Did you answer this riddle correctly?
YES NO
YES NO
The Black Widow Riddle
Hint:
The Nosy Old Woman
My neighbors think I'm a nosy old woman, but today I witnessed a murder. I was looking out my window when I saw something through the window of the apartment building opposite me. A man was in the middle of murdering a woman. The strange thing was, after he finished strangling her, he turned around and our eyes met. It was eerie. Then he pointed at me and kept staring at me for a minute or two. All the time he was staring at me, his finger kept moving. I called the police a few minutes ago and they told me I will have to go down to the police station and give a statement tomorrow. I'm sure they will catch him. I saw his face very clearly.
What do you think the murderer was waving his finger at?
What do you think the murderer was waving his finger at?
Hint:
The murderer was counting the windows to see which floor the old woman was on. He is coming to kill her. Did you answer this riddle correctly?
YES NO
YES NO
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