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Geometric Sequences
hard
0:00.0
Find
a
3
a_3
a
3
for
k
,
2
k
,
4
k
k, 2k, 4k
k
,
2
k
,
4
k
.
A
4
k
4k
4
k
B
8
k
8k
8
k
C
2
k
2k
2
k
D
None
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