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C(10,2)+C(10,3)+C(10,4)+C(10,5)+C(10,6)+C(10,7)+C(10,8)+C(10,9)
C(10,2)+C(10,3)+C(10,4)+C(10,5)+C(10,6)+C(10,7)+C(10,8)+C(10,9)
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