+"9c2" signifies the [Combinations](/wiki/Combinations) of choosing 2 distinct elements from a set of 9, where order does not matter. This mathematical expression evaluates to 36, representing the total unique pairings possible. It illustrates fundamental concepts in [Discrete Math](/wiki/Discrete_Math) and probability.
+## See also
+- [Permutations](/wiki/Permutations)
+- [Factorial](/wiki/Factorial)
+- [Binomial Theorem](/wiki/Binomial_Theorem)
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