+A "4d2" is a conceptual representation of four independent elements, each capable of existing in two distinct states. This fundamental construct often appears in [Discrete Math](/wiki/Discrete_Math) and [Information Theory](/wiki/Information_Theory), illustrating simple duality and potential permutations. It describes the concise possibilities within a defined set.
+## See also
+- [Binary](/wiki/Binary)
+- [Combinatorics](/wiki/Combinatorics)
+- [System State](/wiki/System_State)
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