Counting & ProbabilityHardCounting & Probability ShareCounting & Probability · Hard problemEvaluate 1⋅1!+2⋅2!+3⋅3!1\cdot 1! + 2\cdot 2! + 3\cdot 3!1⋅1!+2⋅2!+3⋅3!.Check Show answer Walk through it step by step Practice more like this Review this concept