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Arithmetic Sequences
medium
0:00.0
In an arithmetic sequence,
a
2
=
5
a_2 = 5
a
2
=
5
and
a
6
=
17
a_6 = 17
a
6
=
17
. What is
a
4
a_4
a
4
?
A
11
B
10
C
12
D
9
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