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ISC
MATHEMATICS · Single correct · ISC · Mathematics · Algebra · Algebra
Problem
Calculate
∑
k
=
1
10
k
2
−
∑
k
=
1
10
k
\displaystyle\sum_{k=1}^{10} k^{2}-\sum_{k=1}^{10} k
k
=
1
∑
10
k
2
−
k
=
1
∑
10
k
. (a) 385 (b) 330 (c) 275 (d) 440
Related theory
Special Series
Special sums
Algebra
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