It belongs to you, but other people use it more than you do. What is it?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

A research team went to a village somewhere between the jungles of Africa. Luckily for them, they reached the day when quite an interesting custom was to be performed. The custom was performed once a year as they confirmed and was performed in order to collect the taxes from every male of the region.

The taxes were to be paid in the form of grains. Everyone must pay pounds of grain equaling his respective age. This means a 20-year-old will have to pay 20 pounds of grain and a 30-year-old will pay 30 pounds of grain and so on.

The chief who collects the tax has 7 weights and a large 2-pan scale to weigh. But there is another custom that the chief can weigh only three of the seven weights.

Can you find out the weights of the seven weights? Also, what is the maximum age of the man that can be weighed for the payment of taxes?

Solve the counting riddle by identifying the number of triangles in the given picture.

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

Why do Chinese men eat more rice than Japanese men do ?

Can you solve below mathematical equation?

2^1234 - 2^1233

Our product and our sum always give the same answer. Who are we?

What is the next number in this series?

4,12,84,3612....