What brings you down but never up?

Count the number of triangles in the picture below:

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

Which country gets ill every time?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

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?

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

what does the below rebus mean?

Two trains start at the same time, one from Bangalore to Mysore and the other from Mysore to Bangalore. if they arrive at their destinations one hour and four hours respectively after passing one another, how much faster is one train running than the other?

I travel all around the world but always stay in the corner. What am I?