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Arithmetic Sequences
medium
0:00.0
Find
a
2
a_2
a
2
if
a
n
=
2
n
+
1
a_n = 2n+1
a
n
=
2
n
+
1
.
A
5
5
5
B
3
3
3
C
4
4
4
D
2
2
2
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