A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

Why is 6 afraid of 7?

Which alphabet is a part of our body?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

Which is faster, Heat or Cold ? Explain.

A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

As we know that white starts the game of chess. Can you find the scenario shown in the picture below is possible when all the white pieces are at the original place while the black pawn is not as in the below picture?

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?