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1. 

   The Great Global Treasur…

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   The interactive puzzle book is reinvented with The Great Global Treasure Hunt, which challenges rea… more

2. 

   Algorithmic Puzzles

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3. 

   Monty Hall Problem And O…

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4. 

   Leonardo's Mirror And Ot…

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5. 

   What Is The Name Of This…

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   Online Price: $18.99