A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?
Can you name four days which start with the letter 'T'?
Why is the longest human nose just 11 inches?
How is a fly different from a mosquito?
I am sure no one can have two things for dinner. what are they?
A word I know, Six letters contain, Subtract just one, And twelve is what remains.
Prove that twice of ten is the same as twice of eleven.
Which alphabet is a part of our body?
Can you name an animal whose killing cannot be performed without spilling your own blood?
What has hands, but can’t clap?
When it's bad luck to meet a black cat?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
