Why is a river so rich ?
Find The Next Number in this series. 1, 2, 6, 42, 1806 ?
Which alphabet letter is a question?
I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60. One of them is 20+20+20. whats the other way ?
What Adam and Eve do not have but the rest of the people have?
What can go through glass without breaking it?
You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?
Can you place six X (crosses) in below board without making three in a row in any way ?
If two's company, and three's a crowd, then whats four and five ?
They are the five precious gems of an everyday sort and all can be found on a Tennis Court. Who are they?
I am the fastest animal but cannot climb the tree. What am I?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.
