What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up. In how many different ways you can climb 10 stairs?
In a picnic session, a footballer was practicing. During his play, he busted lips and ears and broke ribs and thighs. However, he was still able to play a professional match on the very next day. How can this be possible?
You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?
People put me on the table and cut me but do not eat me. What am I?
How much will a 38° angle measure when looked at under a microscope that magnifies ten times?
There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across. How?
A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?
What does an Island and the letter T have in common?
I am under you when I am whole. I shift above you if you remove the first letter. I come all around you if you remove the second as well. Can you tell me who I am?
Find the Odd One Out? 84129 32418 47632 36119 67626 72927
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.