The 100 Seat Airplane
People are waiting in line to board a 100-seat airplane. Steve is the first person in the line. He gets on the plane but suddenly can't remember what his seat number is, so he picks a seat at random. After that, each person who gets on the plane sits in their assigned seat if it's available, otherwise they will choose an open seat at random to sit in.
The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?
The flight is full and you are last in line. What is the probability that you get to sit in your assigned seat?
Hint: You don't need to use complex math to solve this riddle. Consider these two questions:
What happens if somebody sits in your seat?
What happens if somebody sits in Steve's assigned seat?
The correct answer is 1/2.
The chase that the first person in line takes your seat is equal to the chance that he takes his own seat. If he takes his own seat initially then you have a 100% chance of sitting in your seat, if he takes your seat you have a 0 percent chance. Now after the first person has picked a seat, the second person will enter the plan and, if the first person has sat in his seat, he will pick randomly, and again, the chance that he picks your seat is equal to the chance he picks someone your seat. The motion will continue until someone sits in the first persons seat, at this point the remaining people standing in line which each be able to sit in their own seats. Well how does that probability look in equation form? (2/100) * 50% + (98/100) * ( (2/98) * 50% + (96/98) * ( (2/96) * (50%) +... (2/2) * (50%) ) ) This expansion reduces to 1/2.
An easy way to see this is trying the problem with a 3 or 4 person scenario (pretend its a car). Both scenarios have probabilities of 1/2. Did you answer this riddle correctly?
YES NO
The chase that the first person in line takes your seat is equal to the chance that he takes his own seat. If he takes his own seat initially then you have a 100% chance of sitting in your seat, if he takes your seat you have a 0 percent chance. Now after the first person has picked a seat, the second person will enter the plan and, if the first person has sat in his seat, he will pick randomly, and again, the chance that he picks your seat is equal to the chance he picks someone your seat. The motion will continue until someone sits in the first persons seat, at this point the remaining people standing in line which each be able to sit in their own seats. Well how does that probability look in equation form? (2/100) * 50% + (98/100) * ( (2/98) * 50% + (96/98) * ( (2/96) * (50%) +... (2/2) * (50%) ) ) This expansion reduces to 1/2.
An easy way to see this is trying the problem with a 3 or 4 person scenario (pretend its a car). Both scenarios have probabilities of 1/2. Did you answer this riddle correctly?
YES NO
Dark But Not A Room With Curtains
I'm sometimes dark but I'm not a room with curtains
I sometimes contain peanut butter but I'm not a sandwich
I'm sometimes melted but I'm not an ice cube
I'm sometimes in cookies but I'm not a raisin
I'm sometimes a bar but I'm not made of metal
I'm sometimes a chip but I'm not made of potato
What am I?
I sometimes contain peanut butter but I'm not a sandwich
I'm sometimes melted but I'm not an ice cube
I'm sometimes in cookies but I'm not a raisin
I'm sometimes a bar but I'm not made of metal
I'm sometimes a chip but I'm not made of potato
What am I?
Hint:
Small And Colorful Riddle
I have wings but I'm not a bird
I am small and colorful.
I live in gardens and fields and forests.
I used to be a caterpillar.
I am small and colorful.
I live in gardens and fields and forests.
I used to be a caterpillar.
Hint:
Who Killed The Old Man Riddle
An old man lives alone in a house. Because of his age, he is not able to move comfortably and hence most of the things used to be delivered to his house.
On Friday while delivering the mail, the postman feels something suspicious in the house and tries to look inside through the key hole and he saw the blood filled body of the old man.
The police arrived the scene.
Outside the house, he found two bottles of warm milk, Tuesday newspaper, some unopened mail, and some gifts.
The police wasted no time to find the murderer.
Who killed the old man?
On Friday while delivering the mail, the postman feels something suspicious in the house and tries to look inside through the key hole and he saw the blood filled body of the old man.
The police arrived the scene.
Outside the house, he found two bottles of warm milk, Tuesday newspaper, some unopened mail, and some gifts.
The police wasted no time to find the murderer.
Who killed the old man?
Hint:
The newspaper delivery man, because there was no Wednesday, Thursday or Friday newspaper. He knew there was no one home to read it! Did you answer this riddle correctly?
YES NO
YES NO
Dreams Of Guillotines Riddle
A lawyer argued for $1,000,000 damages based on the following claim: His client went to an art museum, where he saw a painting of Marie Antoinette on a guillotine. He fell asleep and dreamed of the painting. At the museums closing time, a guard tapped him on the neck just as he dreamed of the guillotine beheading Marie Antoinette. The tap provoked immediate cardiac arrest and a fatal heart attack immediately following, because he associated the tap with the guillotine blade.
The judge dismissed the case. Why?
The judge dismissed the case. Why?
Hint:
If the client died in his sleep, there would be no way of knowing what he was dreaming. Did you answer this riddle correctly?
YES NO
YES NO
The Long Island Iced Tea
Two guys walk into a bar. They both order the special, Long Island Iced Tea, which is poured from the same pitcher. One of them drinks his drink slowly and one of them drinks it fast. They walk outside and suddenly the guy who drank his Long Island Tea slowly drops to the ground and dies. They order an autospy and find that he died from poison. How could this be if the other guy drank the same tea and didnt even get sick?
Hint:
TTwo guys walk into a bar. They both order the special, Long Island Iced Tea, which is poured from the same pitcher. One of them drinks his drink slowly and one of them drinks it fast. They walk outside and suddenly the guy who drank his Long Island Tea slowly drops to the ground and dies. They order an autospy and find that he died from poison. How could this be if the other guy drank the same tea and didnt even get sick? Did you answer this riddle correctly?
YES NO
YES NO
Almost Hit By A Car Riddle
A man walked home after having been out drinking. He walked down the middle of a deserted country road. There were no streetlights to illuminate the road and there was no moonlight. He was dressed all in black. Suddenly a car that did not have its headlights on came racing down the road. At the last moment, the driver of the car saw the man and swerved to avoid him.
How did he manage to see him?
How did he manage to see him?
Hint:
He was returning home in the middle of the day, so anyone could have seen him. Did you answer this riddle correctly?
YES NO
YES NO
Cover At The Club Riddle
If you go to the club and you're paying the cover, is it cheaper to take one friend to the club twice, or two friends to the club at the same time?
Hint:
It's cheaper to take two friends at the same time. In this case, you would only be buying three covers, whereas if you take the same friend twice you are buying four covers. Did you answer this riddle correctly?
YES NO
YES NO
A Farmer Crossing A River
A farmer has to get a sack of corn, a chicken, and a fox across a river. The farmer is only able to bring one of the above items along with him at a time. The only problem is if he leaves the fox alone with the chicken, the fox will eat the chicken, and if he leaves the chicken along the corn sack, then the chicken will eat the corn sack. How does the farmer get all 3 items across safely?
Hint: The farmer can bring items across the river both ways.The farmer brings the chicken across the river first.
The farmer brings the chicken across. Goes back and brings the fox across, and brings the chicken back with him to the other side of the river and drops off the chicken, then he goes and brings the corn sack across, and finally he goes back for the chicken and brings it across. Did you answer this riddle correctly?
YES NO
YES NO
A Complicated Coop Riddle
There was a farmer and he had a problem with his coop (the place where you keep the birds), and he wanted to go check it out. When he got there he noticed that there was a rooster on the barn. Now the barn was shaped with a triangle type top. But suddenly the rooster laid an egg. Which side did it roll on?
Hint:
Poor Mr. Teddy
Poor Mr. Teddy was found dead in his study by Mr. Fiend.
Mr. Fiend recounted his dismal discovery to the police:
I was walking by Mr. Teddys house when I thought I would just pop in for a visit. I noticed his study light was on and I decided to peek in from the outside to see if he was in there. I walked through the snow towards the window, and I had to wipe the condensation off the window to see inside. That is when I saw his body. I kicked in the front door to confirm my suspicions of foul play. I called the police immediately afterward.
The officer immediately arrested Mr. Fiend for the murder of Mr. Teddy.
How did he know Mr. Fiend was lying?
Mr. Fiend recounted his dismal discovery to the police:
I was walking by Mr. Teddys house when I thought I would just pop in for a visit. I noticed his study light was on and I decided to peek in from the outside to see if he was in there. I walked through the snow towards the window, and I had to wipe the condensation off the window to see inside. That is when I saw his body. I kicked in the front door to confirm my suspicions of foul play. I called the police immediately afterward.
The officer immediately arrested Mr. Fiend for the murder of Mr. Teddy.
How did he know Mr. Fiend was lying?
Hint:
Condensation forms on the inside of the window in the winter, not on the outside. So Mr. Fiend could not have wiped it off to discover Mr. Teddys body. Did you answer this riddle correctly?
YES NO
YES NO
Four Jolly Men Riddle
Four jolly men sat down to play, And played all night till the break of day. They played for cash and not for fun, With a separate score for every one. When it came time to square accounts, They all had made quite fair amounts. Now, not one has lost and all have gained, Tell me, now, this can you explain?
Hint:
Murdered On A Sunday Afternoon
Maid: I was fixing the table.
Cook: I was cooking breakfast.
Butler: I was polishing the silverware and the dishes.
Gardener: I was planting tomato seeds.
Wife: I was reading a book.
Who did it?
Hint:
The cook did it. You don't cook breakfast in the afternoon. Did you answer this riddle correctly?
YES NO
YES NO
Three Rivers Riddle
There are three rivers and after each river lies a grave. A man wants to leave the same number of flowers at each grave and be left with none at the end. However, each time he passes through a river, the number of flowers he has doubles. How many flowers does he have to start with so that he is left with none at the end? And how many does he leave at each grave?
Hint:
This problem has an infinite number of solutions modeled by the equation 8a=7n, where a is the amount of flowers the man starts with and n is the number of flowers he leaves at each grave. The simplest and possibly trivial solution would be to start with 0 flowers and leave 0 flowers at each grave. A more significant solution would be to start with 7 flowers and leave 8 at each grave. Any positive integer multiple of this solution also satisfies the conditions. For example, the man starts with 14 flowers and leaves 16 at each grave; so, 14 doubles to 28, and 28-16= 12; 12 doubles to 24, and 24-16= 8; 8 doubles to 16, and 16-16= 0. The result is the same if the man starts with 21 flowers and leaves 24 flowers at each grave, or starts with 28 and leaves 32. Did you answer this riddle correctly?
YES NO
YES NO
Cursed As A Baby Riddle
I was cursed as a baby,
Three good faeries took me to the forest,
I returned to the castle where the curse came true,
A handsome prince saved me.
Who could I be?
Three good faeries took me to the forest,
I returned to the castle where the curse came true,
A handsome prince saved me.
Who could I be?
Hint:
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