A man dies of old age on his 25 birthday. How is this possible?
A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?
There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.
The first box says "The Gold is not here".
The Second box says "The Gold is not here".
The Third box says "The Gold is in the Second box".
Which box has the Gold?
Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?
It belongs to you, but other people use it more than you do. What is it?
How can you take 2 from 5 and leave 4?
There are a hundred statements.
First person says: At least one of the statements is false.
Second person says: At least two of the statements is false.
Third person says: At least three of the statements are false.
Fourth person says: At least four of the statements are false.
Hundredth person says: At least a hundred of the statements are false.
Analysing it, how many statements do you think are false and how many are true?
What runs around the whole yard without moving?
A network of 20 x 10 squares is given to you.
Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?
That attorney is my brother, testified the accountant.
But the attorney testified he didn't have a brother.
Who is lying?
A deaf and mute man goes to the train station. Tickets for the train are 50 cents each. The man goes to the ticket booth and hands the man inside just a dollar. The man in the booth hands him two tickets.
How did the man in the booth know to give him two tickets without even looking at him?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki