What four weights can be used to balance from 1 to 30 pounds?
I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?
I can be made. I can be cracked. I can be told. I can be played. Who am I?
My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?
Count the number of triangles in the below picture?
What demands an answer, but asks no questions
In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?
An old Woman left INR 33,333 to be divided equally among two fathers and two sons and each was to receive INR 11,111. How was this possible?
How many points are there on the globe where, by walking one mile south, then one mile east and then one mile north, you would reach the place where you started?
What does this rebus riddle mean?
What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
