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Modular Arithmetic
hard
0:00.0
Find the number of solutions to
x
2
≡
1
(
m
o
d
8
)
x^2 \equiv 1 \pmod{8}
x
2
≡
1
(
mod
8
)
.
A
1
1
1
B
2
2
2
C
3
3
3
D
4
4
4
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