An old man had three sons. He was dying and wanted to leave all his property with his wisest son. So he call all three of them and gives them equal amount of money and asks them to buy something from that money that can fill their living room entirely.
The first son bought straw but due to shortage of money, he was not able to fill the entire room. The second son bought sticks, but again they were not enough to fill the room. But the third son bought two things that filled the room completely.
Can you find out what did he buy?
The third son bought a candle and a matchstick. He lighted the candle with the matchstick and the room was filled completely with light.