What is always in front of you but can’t be seen?

What kind of tree can you carry in your hand?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

How can you make number one disappear by adding something to it?

How many times can you subtract the number two from the number fifty?

Can you find out the total number of triangles in the given figure?

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

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?