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MathNet 2019-part-04 — 184 problems (EN–VI) Question 154

Math Olympiad Vault · MathNet 2019-part-04 — 184 problems (EN–VI)

Question 154

Determine the units digit of $(2!+2)(3!+3)(4!+2)(5!+3) \cdots (2018!+2)(2019!+3)$.