Which five letter word can be added at the end of below word to form a
valid word?

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What has a ring but no finger?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

Luis Garavito killed Density x Volume.

Who is Luis Garavito ?

There are three boxes on a table. One of the box contains Gold and the other two are empty. A printed message contains in each box. One of the message is true and the other two are lies.

The first box says "The Gold is not here".

The Second box says "The Gold is not here".

The Third box says "The Gold is in the Second box".

Which box has the Gold?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?

A man calls his dog from the opposite side of a river. The dog crosses the river without a bridge or a boat and manages to not get wet. How is this possible?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?