数学题：猜书价，找出正确范围
Little Ming purchased a book called 'Fun Mathematics' online. His classmates wanted to know the price of the book, so Little Ming asked them to guess.
Person A said, 'At least 15 yuan.' Person B said, 'At most 12 yuan.' Person C said, 'At most 10 yuan.' Little Ming said, 'All three of you are wrong.'
Therefore, the price of the book, represented by x (in yuan), falls within the range of ( ).
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