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Modular Arithmetic
medium
0:00.0
How many solutions are there for
x
2
≡
1
(
m
o
d
5
)
x^2 \equiv 1 \pmod 5
x
2
≡
1
(
mod
5
)
?
A
1
1
1
B
2
2
2
C
4
4
4
D
0
0
0
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