You got 18 out of 20!

If you are tired of the same old trivia questions week after week why not try something new, like a few very challenging riddles. You may already think you're a know-it-all when it comes to general knowledge quizzes but solving tricky riddles is a whole different ball (or mind) game.

We have put together a list of some of the best and hardest riddles and teasers around, just for you to try out. Some of them may seem simple but don't be fooled, you'll have to be sharp to solve them all.

While you may be a quiz master when it comes to general trivia and Jeopardy!, these challenging riddles are bound to give your brain a good workout.

So without further ado it's time to put on your thinking cap and find the answers. If you get stuck at any question, simply click the "I give up" button to reveal the answer and move on to the next riddle.