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∑r=110 (n +1) =??Why is it equal to 10(n+1) and not only (n+1)??Please explain??

Meghendra Agrawal , 6 Years ago
Grade
anser 1 Answers
Susmita

Last Activity: 6 Years ago

Hey i hope you know the formula 
\sum_{1}^{n}1 =n
Because \sum_{1}^{n}1means adding one n times.
In the given problem
 
\sum_{1}^{10}(n+1)
= \sum_{1}^{10}n +\sum_{1}^{10}1
= n\sum_{1}^{10}1 +\sum_{1}^{10}1
=n×10+10=10(n+1)
Hope this helps.please approve if it does.

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