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Arithmetic Sequences
medium
0:00.0
What is
a
1
a_1
a
1
for
a
n
=
10
n
−
1
a_n = 10n - 1
a
n
=
10
n
−
1
?
A
9
9
9
B
10
10
10
C
1
1
1
D
0
0
0
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