Tamtam collected 65 shells in total. She got 13 purple shells, 8 pink shells, 18 yellow shells, and 12 blue shells. The remaining shells are color orange. How many orange shells are there? Let's be accurate as possible.
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Tamtam has a total of 13 + 8 + 18 + 12 = 51 shells that are not orange. Therefore, Tamtam has a total of 65 – 51 = 14 orange shells.
The answer: 14.
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