+2c2 fundamentally describes the act of selecting two elements from a set of two, invariably yielding a singular outcome. This concept illuminates basic [Combinatorics](/wiki/Combinatorics) and the intrinsic nature of [Choice](/wiki/Choice) within confined parameters.
+## See also
+- [Mathematics](/wiki/Mathematics)
+- [Set Theory](/wiki/Set_Theory)
+- [Duality](/wiki/Duality)
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