The Invisible Thief(English, Paperback, Geronimo Stilton)
      
      
 
 
 
    
 
        
     
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  Do you want to give your brain a good workout? Try out the 100 more Logic and Math Puzzles within these pages and you'll come out of it feeling sharper and smarter. You can even solve them with a bunch of friends. It will be a fun and exciting way to learn new things.