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Modular Arithmetic
hard
0:00.0
What is
(
p
−
1
)
!
(
m
o
d
p
)
(p-1)! \pmod p
(
p
−
1
)!
(
mod
p
)
for prime
p
p
p
?
A
−
1
-1
−
1
B
1
1
1
C
0
0
0
D
5
5
5
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