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MATH / The superfactorial n is defined as n = underbrace n!^n!^cdot^cdot^cdot^n!_n!. What is the units digit of 4? · Discussion

Discussing The superfactorial n is defined as n = underbrace{ n!^{{n!}^{{cdot}^{{cdot}^{{cdot}^{n!}}}}}}_{n!}. What is the units digit of 4? · MATH

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