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Geometric Sequences
medium
0:00.0
Find the common ratio if
a
n
=
7
⋅
(
1
/
2
)
n
a_n = 7 \cdot (1/2)^n
a
n
=
7
⋅
(
1/2
)
n
.
A
0.5
0.5
0.5
B
2
2
2
C
7
7
7
D
1
1
1
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