What word looks the same backwards and upside down?
See also best riddles or new riddles.funnylogicshort
Your bike crashed into the dark forest and suddenly you saw and deadly panther and jaguar. You got just one bullet.
What is your escape strategy?
Simple, you must shoot the panther and drive off in the jaguar (car).cleanlogicshort
A girl is sitting in a house at night that has no lights on at all. There is no lamp, no candle, nothing. Yet she is reading. How?
The woman is blind and is reading braille.animalcleanshortwhat am I
I live in lakes and rivers.
I eat fish and birds.
I have four legs and a long tail.
I have lots of pretty teeth.
I am a...
What is as light as a feather but even the strongest man in the world can’t hold it for long?
What can go up a chimney down but not down a chimney up?
An umbrella.animalcleanshortwhat am I
I create my lair with earthen string and dispatch my prey with a biting sting. What am I?
A bad king has a cellar of 1000 bottles of delightful and very expensive wine. A neighboring queen plots to kill the bad king and sends a servant to poison the wine. Fortunately (or say unfortunately) the bad king’s guards catch the servant after he has only poisoned one bottle. Alas, the guards don’t know which bottle but know that the poison is so strong that even if diluted 100,000 times it would still kill the king. Furthermore, it takes one month to have an effect. The bad king decides he will get some of the prisoners in his vast dungeons to drink the wine. Being a clever bad king he knows he needs to murder no more than 10 prisoners – believing he can fob off such a low death rate – and will still be able to drink the rest of the wine (999 bottles) at his anniversary party in 5 weeks time. Explain what is in mind of the king, how will he be able to do so?
Think in terms of binary numbers. (now don’t read the solution, give a try).
Number the bottles 1 to 1000 and write the number in binary format.
bottle 1 = 0000000001 (10 digit binary)
bottle 2 = 0000000010
bottle 500 = 0111110100
bottle 1000 = 1111101000
Now take 10 prisoners and number them 1 to 10, now let prisoner 1 take a sip from every bottle that has a 1 in its least significant bit. Let prisoner 10 take a sip from every bottle with a 1 in its most significant bit. etc.
prisoner = 10 9 8 7 6 5 4 3 2 1
bottle 924 = 1 1 1 0 0 1 1 1 0 0
For instance, bottle no. 924 would be sipped by 10,9,8,5,4 and 3. That way if bottle no. 924 was the poisoned one, only those prisoners would die.
After four weeks, line the prisoners up in their bit order and read each living prisoner as a 0 bit and each dead prisoner as a 1 bit. The number that you get is the bottle of wine that was poisoned.
1000 is less than 1024 (2^10). If there were 1024 or more bottles of wine it would take more than 10 prisoners.
How many sides does a circle have?
Two. The inside and the outside.cleanpoemsshort
What has roots as nobody sees,
Is taller than trees,
Up, up it goes
And yet never grows?
A mountain.logicshortwhat am I
What gets wet while it's drying?