In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat. Can this even be possible?
The first box has two white balls. The second box has two black balls. The third box has a white and a black ball. Boxes are labeled but all labels are wrong! You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball. How many such operations are necessary to correctly label the boxes?
I always drive my customer away. Who am I?
What number should come in place of the question mark below?
Find the missing number in the image below.
Out of three Friends John, Jacob and Jonny one of them is a king, one is a bureaucrat, and one is a Spy. The king always tells the truth, the bureaucrat always lies, and the Spy can either lie or tell the truth. John says: Jonny is a bureaucrat Jacob says: John is a king Jonny says: I am a Spy Tell me, Who is the king, who is the bureaucrat, and who is the Spy?
If 1+9+8=1, what is 2+8+9?
Can you find the odd number in the following five choices? 1) 482636 2) 259807 3) 865195 4) 104739 5) 391744
What number does the below three word/phrase identify and why? 1. Deck 2. Year 3. Singing in the Rain
The picture shows the dice results in each couple of throws. If they are actually following a pattern, can you find out the missing one?
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?
The day before the 1996 U.S. presidential election, the NYT Crossword contained the clue “Lead story in tomorrow’s newspaper,” the puzzle was built so that both electoral outcomes were correct answers, requiring 7 other clues to have dual responses.
