An old man wanted to leave all of his money to one of his three sons, but he didn't know which one he should give it to. He gave each of them a few coins and told them to buy something that would be able to fill their living room. The first man bought straw, but there was not enough to fill the room. The second bought some sticks, but they still did not fill the room. The third man bought two things that filled the room, so he obtained his father's fortune. What were the two things that the man bought?

Why this works

This riddle plays with the idea of "filling" a space, leading us to think about physical objects rather than abstract concepts. The first two sons bought straw and sticks, which only partially filled the room, focusing on volume. In contrast, the third son cleverly interpreted the challenge by purchasing a candle and matches; when he lit the candle, the light illuminated the entire room, demonstrating that "filling" could also refer to filling it with light rather than just physical matter. This twist not only showcases his wisdom but also highlights the importance of thinking outside the box!