Best Riddles and Answers

Question: 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 straws, 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?

Question: A chicken gives meat and egg while cow gives us milk. Find another who gives us all these?

Question: I am a teacher, yet I am not a human nor a robot.

Question: If a white house is white and a yellow house is yellow, what color is a green house?

Question: I cannot hear or even see,
but sense light and sounds there may be.
Sometimes I end up on the hook,
or even deep into a book.

What am I?