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Modular Arithmetic
hard
0:00.0
How many solutions for
x
2
≡
2
(
m
o
d
7
)
x^2 \equiv 2 \pmod 7
x
2
≡
2
(
mod
7
)
?
A
2
2
2
B
1
1
1
C
0
0
0
D
7
7
7
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