What has a ring but no finger?
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?
It's a test that will check your IQ. Suppose you have one 11 minute hourglass and one 13 minute hourglass. Can you measure exactly fifteen minutes using them ?
John is found dead in a bare field. Nobody killed John, John did not commit suicide. Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?
There is a box full of marbles, all but two are blue, all but two are green, and all but two are red. How many marbles are in the box?
Find the missing letter in the last circle logically in the given below picture.
Rob is taller than Edwin, and Jurgen is shorter than Rob. Of only one of the following statements, we now certainly know it is correct: A.Edwin is taller than Jurgen B.Jurgen is taller than Edwin C.It cannot be determined if Jurgen or Edwin is the tallest.
A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train. How did it happen?
If you were to put a coin into an empty bottle and then insert a cork into the neck, how could you remove the coin without taking out the cork or breaking the bottle?
I had an infinite supply of water and 5 litres and 3 litres jars. How would you measure exactly 4 litres in the least number of steps?
Can you find out the next digit in the following series ? 0, 0, 1, 3, 2, 6, 3, 9, 4, 12, 5, ?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.