This Riddle Seems Impossible to Me, Even Though I Know the Answer

Do you think you can call yourself a riddle expert? Can you solve them all without thinking for longer than 5 seconds? Here's a real test for your logic and problem-solving skills. If you manage to solve all the riddles including the impossible one, you can tell your friends you're a genius. Good luck not breaking your brain while trying to figure out who the outsider is. 
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