There is something which you can be arrested for attempting but not for successfully completing.
What can you hold in your right hand, but never in your left hand?
How can a man go eight days without sleep?
Find the Odd One Out? 84129 32418 47632 36119 67626 72927
I’m orange, I wear a green hat and I sound like a parrot. What am I?
Find the next number in the series? 2, 12, 36, 80, 150, 252, 392, _ ?
How can you drop a raw egg from a height onto a concrete floor without cracking it?
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
Count the number of triangles in the picture below:
What word is pronounced the same if you take away four of its five letters?
Jenifer and Jesica are having a conversation. Jenifer: I am definitely not over 30. Jesica: I am 28 and you are surely 5 years older to me at least. Jenifer: No, you are at least 29. You are told that both of them are lying throughout in the conversation. Can you find their respective ages?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.