Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

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

Divide 110 into two parts so that one will be 150 per cent of the other. What are the 2 numbers?

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?

A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.

Six glasses are in a row. The first three are filled with milk and the last three are empty. By moving only one glass, can you arrange them so that the full and the empty glasses alternate?

What makes this number unique: 8,549,176,320?

Remove two matchsticks to make the below equation correct.

Which three-digit number, made of consecutive digits, like 567, is 2 less than a cube and 2 more than a square?