Last Non-Zero Digit (Pt. 2)

Number Theory Level 4

Find the last non-zero digit of 2000 ! 2000! .

Notation :
! ! denotes the factorial notation. For example, 8 ! = 1 × 2 × 3 × ⋯ × 8 8! = 1\times2\times3\times\cdots\times8 .

5 1 6 8 9 3 2 7

Arulx Z by Arulx Z , 20, India

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1 solution

Madelyn Yu
Jun 3, 2016

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