There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends. What is it?
Find the Odd One Out? 84129 32418 47632 36119 67626 72927
Can you think of any three-dimensional shape that comprises of exactly two surfaces?
A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it. How can he do that?
What is the fastest way to double your money?
What runs around the whole yard without moving?
Edward James went for tiger hunting. It was not his lucky day. He got six tigers without heads, nine tigers without the tail and eight cut in two halves. How many tiger did he hunted ?
How many triangles are there on the puzzle below?
Eight of us go fourth, not back, to protect our king from an attack. What are we?
Find the next number in the series below 21 32 54 87 131 ?
What work can one never finish?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
