In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat. Can this even be possible?
What is the next number in the series? 15 29 56 108 208 ?
What has hands, but can’t clap?
Why is 6 afraid of 7?
A man is lying dead in a field where no one is around. His head is split open and his legs are disfigured. Near to him, there is an unopened package. No living organism can be found anywhere at the crime scene. How did he die?
Forwards I am heavy, backward I am not. What am I?
Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?
Remove two matchsticks to make the below equation correct.
If an electric train is travelling south, then which way is the smoke going?
In the image given, you can find several triangles. Can you count them all?
Can you find the dog hidden in a group of pandas?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.