Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

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?

In the following picture, E is going to slide the object down and as per the terrain and the physics, the round object is going to travel all the way till the end. Now, can you analyze who all people will die when it happens?

Solve the puzzle by telling what does below picture means.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

How many bananas can you eat if your stomach is empty?

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

A dying old man wants to divide his entire land between his only two sons. Since his only wish is to treat them as equal as both of them have been too good to him, he wants to divide his land equally between them. The problem is that the land is significantly irregular in shape and thus there is no choice of cutting them into two equal halves.

Can you help him divide the land in a manner that both of his sons will be happy?

What is so fragile that saying its name breaks it?

When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?