Why is it very easy to weigh a fish?
Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time. However, they still manage to cross the river. How is it possible?
Prove that twice of ten is the same as twice of eleven.
What does an Island and the letter T have in common?
There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence. Do you know what word is that?
What has many teeth, but cannot bite?
The answer I give is yes, but what I mean is no. What was the question?
The Little ant seems to be always confused. Do you know why?
Can you name four days which start with the letter 'T'?
It's a protector. It sits on a bridge. One individual can see directly through it, while others wonder what it hides. What is it?
Why are all black people so quick ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.