You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

Can you find a five letter word that is left with only two letters if one is removed?

A boy purchased a book from a bookkeeper and gave him $100.
The cost of the book is $50 but the bookkeeper has no change, so he gets the change from the next shop and returns the boy his $50.

After some time the next shopkeeper came with the $100 note and told the bookkeeper that the note was a fraud, so he took the money back.

How much loss did the bookkeeper face?

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

What happened when the wheel was invented?

What word begins and ends with an E, but has only one letter?

What work can one never finish?

What is the largest number you can write with just 3 digits?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.