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Arithmetic Sequences
easy
0:00.0
If
a
1
=
10
a_1 = 10
a
1
=
10
and
a
2
=
5
a_2 = 5
a
2
=
5
, then
a
3
=
a_3 =
a
3
=
:
A
0
B
2.5
C
-5
D
15
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