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Geometric Sequences
easy
0:00.0
What is
a
n
a_n
a
n
if
a
1
=
2
a_1 = 2
a
1
=
2
and
r
=
2
r = 2
r
=
2
?
A
2
n
2^n
2
n
B
2
n
2n
2
n
C
2
n
−
1
2^{n-1}
2
n
−
1
D
2
2
2
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