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Mathematics
Problem
An arithmetic sequence has
u
1
=
7
u_1 = 7
u
1
=
7
and
S
2
=
17
S_2 = 17
S
2
=
17
. a. Find the common difference of the sequence. b. Find
n
n
n
such that
S
n
=
242
S_n = 242
S
n
=
242
.
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