Flip The Switch Riddle
There is a prison with 100 prisoners, each in separate cells with no form of contact. There is an area in the prison with a single light bulb in it. Each day, the warden picks one of the prisoners at random, even if they have been picked before, and takes them out to the lobby. The prisoner will have the choice to flip the switch if they want. The light bulb starts off.
When a prisoner is taken into the area with the light bulb, he can also say "Every prisoner has been brought to the light bulb." If this is true all prisoners will go free. However, if a prisoner chooses to say this and it's wrong, all the prisoners will be executed. So a prisoner should only say this if he knows it is true for sure.
Before the first day of this process begins, all the prisoners are allowed to get together to discuss a strategy to eventually save themselves.
What strategy could they use to ensure they will go free?
When a prisoner is taken into the area with the light bulb, he can also say "Every prisoner has been brought to the light bulb." If this is true all prisoners will go free. However, if a prisoner chooses to say this and it's wrong, all the prisoners will be executed. So a prisoner should only say this if he knows it is true for sure.
Before the first day of this process begins, all the prisoners are allowed to get together to discuss a strategy to eventually save themselves.
What strategy could they use to ensure they will go free?
Hint:
Only allow one prisoner to turn the light bulb off and all of the others turn it on if they have never turned it on before. If they have turned it on before they do nothing. The prisoner that can turn it off then knows they have all been there and saves them all when he has turned it off 99 times. Did you answer this riddle correctly?
YES NO
YES NO
The Bus Stop Riddle
An empty bus pulls up at a stop and 5 people get on. At the next stop 5 people get off and twice as many people get on as at the first stop. At the third stop 10 people get off.
How many people are on the bus at this point?
How many people are on the bus at this point?
Hint:
Ne, the bus driver.
On the 1st stop, 5 people get on. On the 2nd stop, 5 people get off and 10 (twice as many as at 1st stop) people get on. On the 3rd stop, 10 people get off. So there are (5 5 + 10 10) 0 passengers left, which leaves the bus driver as the only person on board the bus. Did you answer this riddle correctly?
YES NO
On the 1st stop, 5 people get on. On the 2nd stop, 5 people get off and 10 (twice as many as at 1st stop) people get on. On the 3rd stop, 10 people get off. So there are (5 5 + 10 10) 0 passengers left, which leaves the bus driver as the only person on board the bus. Did you answer this riddle correctly?
YES NO
From Block To Block Riddle
I carry lots of people.
I pick them up and drop them off.
I might travel from city to city.
I might only go from block to block.
I am a...
I pick them up and drop them off.
I might travel from city to city.
I might only go from block to block.
I am a...
Hint:
Full And Blue Riddle
Always old, sometimes new.
Never sad, sometimes blue.
Never empty, sometimes full.
Never pushes, always pulls.
What am I?
Never sad, sometimes blue.
Never empty, sometimes full.
Never pushes, always pulls.
What am I?
Hint:
A Bloody New Car Riddle
Hint:
Working With Precision Riddle
Those who are great I have made great,
Those who are failures I have made failures.
I am not a machine, but I work with all of the precision of a machine,
Plus the intelligence of a person.
What am I?
Those who are failures I have made failures.
I am not a machine, but I work with all of the precision of a machine,
Plus the intelligence of a person.
What am I?
Hint:
Starts Off Light Riddle
It starts off light and easy to bear, yet the more you carry it with you, the heavier a burden it becomes. Stick to what's right and your worries will fade. What is it?
Hint:
Laying The World At Your Feet
Those who are great I have made great,
Those who are failures I have made failures.
I am not a machine, but I work with all of the precision of a machine,
Plus the intelligence of a person.
Now, you may run me for profit or you may run me
For ruin. It makes no difference to me.
Take me, train me, be firm with me,
And I will lay the world at your feet.
Be easy with me and I will destroy you.
Who am I?
Those who are failures I have made failures.
I am not a machine, but I work with all of the precision of a machine,
Plus the intelligence of a person.
Now, you may run me for profit or you may run me
For ruin. It makes no difference to me.
Take me, train me, be firm with me,
And I will lay the world at your feet.
Be easy with me and I will destroy you.
Who am I?
Hint:
Talking With A Goat Riddle
Hint:
100 Widgets Riddle
Hint:
It would take 5 minutes. Each machine takes 5 minutes to make its widget. Therefore, each of the 100 machines would have finished making its widget in 5 minutes. Did you answer this riddle correctly?
YES NO
YES NO
The Riddle Of Sphinx
Hint:
A person: ("Legs" is a metaphor for hands and knees in the first description and two legs and a cane in the last.) Did you answer this riddle correctly?
YES NO
YES NO
Shimmering Fields Riddle
I am a shimmering field that reaches far. To the horizon I span beneath the universe's largest star. Yet I have no tracks and I am crossed without paths. What am I?
Hint:
Living In Your Car Riddle
Hint:
Grapeland To Applecity
You have to send 3,000 grapes 1,000 kilometers from grapecity to appleland. Your truck can carry 1,000 grapes at a time. Every time you travel a kilometer towards appleland you must pay a tax of 1 grape but you pay nothing when going in the other direction (towards grapecity).
What is highest number of grapes you can get to appleland?
What is highest number of grapes you can get to appleland?
Hint:
Step one: First you want to make 3 trips of 1,000 grapes 333 kilometers. You will be left with 2,001 grapes and 667 kilometers to go.
Step two: Next you want to take 2 trips of 1,000 grapes 500 kilometers. You will be left with 1,000 grapes and 167 kilometers to go (you have to leave a grape behind).
Step three: Finally, you travel the last 167 kilometers with one load of 1,000 grapes and are left with 833 grapes in appleland. Did you answer this riddle correctly?
YES NO
Step two: Next you want to take 2 trips of 1,000 grapes 500 kilometers. You will be left with 1,000 grapes and 167 kilometers to go (you have to leave a grape behind).
Step three: Finally, you travel the last 167 kilometers with one load of 1,000 grapes and are left with 833 grapes in appleland. Did you answer this riddle correctly?
YES NO
New York Plane Crash Riddle
If a plane carrying passengers from New Jersey crashes in New York, where do you bury the survivors?
Hint:
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