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GCD & LCM
hard
0:00.0
Find
GCD
(
3
7
−
1
,
3
9
−
1
)
\text{GCD}(3^{7}-1, 3^{9}-1)
GCD
(
3
7
−
1
,
3
9
−
1
)
.
A
2
B
2
C
1144561273430837494885949696426
D
1
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