Groups and FieldsSuperchallengeCosets and Lagrange's Theorem ShareCosets and Lagrange's Theorem · Superchallenge problemWhat is the smallest k≥1k\ge1k≥1 with 3k≡1(mod1000)3^k\equiv1\pmod{1000}3k≡1(mod1000)?Check Show answer Walk through it step by step Practice more like this Review this concept