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Mathematics
Problem
The general term of a sequence is
a
n
=
15
+
4
n
a_n = 15 + 4n
a
n
=
15
+
4
n
. If the sequence is an arithmetic progression, what is its common difference? a)
15
15
15
b)
11
11
11
c)
4
4
4
d)
19
19
19
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