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Set Theoryhard
0:00.0

Let S={1,2,…,10}S = \{1, 2, \dots, 10\}S={1,2,…,10}. Suppose we want to partition SSS into three disjoint non-empty sets A,B,CA, B, CA,B,C such that the sum of the elements in each set is equal. How many such partitions {A,B,C}\{A, B, C\}{A,B,C} of SSS exist?