What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
Which digit occurred maximum times between the number 1 and 1000?
How can you tell a raw egg from a hard-boiled egg?
How many letters are in the alphabet?
10+10 and 11+11 can give you the same answer. Explain how?
How is a fly different from a mosquito?
I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?
I make two people out of one. What am I?
Which number should replace the question mark?
What can jump higher than a building?
There was an aeroplane crash, every single person died, but two people survived. How is this possible?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
