I can write cow in 13 letters.

Can You?

Can you find out the missing number in the grid?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

How many times can you subtract the number 5 from 25?

How many sides does a circle have?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

Nodes are shown below and you need to connect them based on the following rule: Every node can be connected to the number of nodes inside them, i.e. the first node there is a value of 1 which indicates that the first node can connect to exactly one node only.Can you do it?

If eleven plus two equals one, what does nine plus five equal?

In the picture, you can see a chess board. On the top left position, the K marks a knight. Now, can you move the knight in a manner that after 63 moves, the knight has been placed at all the squares exactly once excluding the starting square?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?