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Arithmetic Sequences
hard
0:00.0
Sum the sequence
k
,
k
,
k
,
…
,
k
k, k, k, \dots, k
k
,
k
,
k
,
…
,
k
(
n
n
n
times).
A
n
k
nk
nk
B
n
+
k
n+k
n
+
k
C
k
n
k^n
k
n
D
n
k
n^k
n
k
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