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Mathematics
Mathematics
Problem
Calculate
∑
k
=
1
10
(
2
k
+
1
)
\displaystyle \sum_{k=1}^{10}(2k+1)
k
=
1
∑
10
(
2
k
+
1
)
. a)
110
110
110
b)
99
99
99
c)
120
120
120
d)
100
100
100
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