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Geometric Sequences
easy
0:00.0
What is
a
3
a_3
a
3
for
a
n
=
(
−
1
)
n
a_n = (-1)^n
a
n
=
(
−
1
)
n
?
A
−
1
-1
−
1
B
−
3
-3
−
3
C
1
1
1
D
0
0
0
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