The more of this there is, the less you see. What is it?
There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?
If a wheel has 54 spokes, how many spaces are there between the spokes?
What is the Surname of Barbie Doll?
I’m orange, I wear a green hat and I sound like a parrot. What am I?
John was piloting a plane behind a car but was never able to overtake it. Why?
Why 1729 is a magic number? Answer Logically.
You Throw The Outside, Cook The Inside Eat The Outside, Throw The Inside. What Is It?
If an electric train is travelling south, then which way is the smoke going?
How can you write nineteen in a manner that if we take out one, it becomes twenty?
I make two people out of one. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.