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Geometric Sequences
easy
0:00.0
What is
a
1
a_1
a
1
for
x
,
2
x
,
4
x
x, 2x, 4x
x
,
2
x
,
4
x
?
A
x
x
x
B
2
x
2x
2
x
C
2
2
2
D
0
0
0
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