How many times in a given day, minutes and hour clock comes in a straight line ?
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?
I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?
I inserted a coin in a bottle and closed its mouth with the help of a cork. Now, I was able to take the coin out from the bottle without taking out the cork or breaking the bottle. Can you tell me how I did it?
Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask. Who are these two masked girls?
There was a strange boy who was born before his father. How can this be possible?
How do you go from 98 to 720 using just one letter?
Can you think of any three-dimensional shape that comprises of exactly two surfaces?
What is in seasons, seconds, centuries and minutes but not in decades, years or days?
Can you find the missing number in the third row? 35 20 14 27 12 18 5 2 ?
A maths symbol is hidden in the below Bar Graph. Can you decipher it?
There is a cryptic organization called Cicada 3301 that posts challenging puzzles online, possibly to recruit codebreakers and linguists.