The Sea's Blue Skirt Riddle
Hint:
I Am The Ocean And I Am The Sea
Hint:
Angry Sea Monster Riddle
Hint:
Soldiers Across A River
A detachment of soldiers must cross a river. The bridge is broken, the river is deep. What to do?
Suddenly the officer in charge spots two boys playing in a row boat by the shore.
The boat is so tiny however, that is could only hold two boys or one soldier.
Still all the soldiers make it across the river in the boat. How?
Suddenly the officer in charge spots two boys playing in a row boat by the shore.
The boat is so tiny however, that is could only hold two boys or one soldier.
Still all the soldiers make it across the river in the boat. How?
Hint:
First the boys cross the river and 1 boy comes back and gets a soldier and keeps going back until all the soldiers have made it across safely. Did you answer this riddle correctly?
YES NO
YES NO
Girl's Best Friend.
Hint: Diamonds are made of this element.
A World's Best Seller Riddle
I am old but also new
I may seem rather strange but all of me is true
I am 66 inside but really only 1
I can be pocket sized or sometimes weigh a ton!
All of me is about a person you really ought to meet
He often signs his name and each story is his treat
I am a world best-seller but sadly seldom read
Perhaps you've seen me on a shelf or lying by a bed?
What am I?
I may seem rather strange but all of me is true
I am 66 inside but really only 1
I can be pocket sized or sometimes weigh a ton!
All of me is about a person you really ought to meet
He often signs his name and each story is his treat
I am a world best-seller but sadly seldom read
Perhaps you've seen me on a shelf or lying by a bed?
What am I?
Hint:
Sea Monsters Riddle
Hint:
Dracula's Girlfriend Riddle
Hint:
Left And Right Eye Riddle
Hint:
Farm Secrets Riddle
Hint:
Drill Sergeant Riddle
Hint:
The Vikings Secret Message
Hint:
Two Girls On A Train
Two schoolgirls were traveling from the city to a dacha (summer cottage) on an electric train.
"I notice," one of the girls said "that the dacha trains coming in the opposite direction passes us every 5 minutes. What do you think-how many dacha trains arrive in the city in an hour, given equal speeds in both directions?"
"Twelve, of course," the other girl answered, "because 60 divided by 5 equals 12."
The first girl did not agree. What do you think?
"I notice," one of the girls said "that the dacha trains coming in the opposite direction passes us every 5 minutes. What do you think-how many dacha trains arrive in the city in an hour, given equal speeds in both directions?"
"Twelve, of course," the other girl answered, "because 60 divided by 5 equals 12."
The first girl did not agree. What do you think?
Hint:
If the girls had been on a standing train, the first girl's calculations would have been correct, but their train was moving. It took 5 minutes to meet a second train, but then it took the second train 5 more minutes to reach where the girls met the first train. So the time between trains is 10 minutes, not 5, and only 6 trains per hour arrive in the city. Did you answer this riddle correctly?
YES NO
YES NO
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
Farmer Stones Riddle
A farmer had a stone that he used to measure grain on his scale. One day his neighbor borrowed the stone, and when he returned, it was broken into four pieces. The neighbor was very apologetic, but the farmer thanked the neighbor for doing him a big favor. The farmer said that now he can measure his grain in one pound increments starting at one pound all the way to forty pounds (1, 2, 3, 17, 29, 37, etc.) using these four stones.
How much do the four stones weight?
How much do the four stones weight?
Hint:
The stones weight 1 pound, 3 pounds, 9 pounds and 27 pounds. These can be used in combination with each other on both sides of the scale to come up with any counterweight from 1 to 40 pounds. Did you answer this riddle correctly?
YES NO
YES NO
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