+Lagrange's Theorem is a cornerstone result in [Group Theory](/wiki/group_theory), revealing a fundamental property of finite groups. It elegantly states that the order of any [Subgroup](/wiki/subgroup) always divides the order of the group itself. This simple yet powerful theorem provides crucial insights into the structure and hierarchy within groups.
+## See also
+- [Group](/wiki/group)
+- [Coset](/wiki/coset)
+- [Abstract Algebra](/wiki/abstract_algebra)
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