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Geometric Sequences
hard
0:00.0
Find
a
3
a_3
a
3
if
a
1
=
k
,
r
=
1
/
k
a_1=k, r=1/k
a
1
=
k
,
r
=
1/
k
.
A
1
/
k
1/k
1/
k
B
1
1
1
C
k
2
k^2
k
2
D
None
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