Why do people go to bed?

What goes through cities and fields, but never moves?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

What begins with T, ends with T, and has T in it?

Which Burger Is Different in below image?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

What does this mean?

CCCCCCC

Decode below three cipher riddles:

26 L of the A
7 D of the W
1000 Y in a M

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

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?