∑ r=1 10 (n – r +1) =?? How to solve this??Please show the steps.

Question

Arun · Answer

Dear Meghendra
here r is variable hence n+1 is remain same

hence when we open the sign,

we get

10 (n+1) – 10 – 9- 8 – 7 – 6 – 5 – 4 – 3 – 2 – 1

10n + 10 – 10 – 45

10 n – 45

Regards
Arun (askIITians forum expert)

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∑ r=1 10 (n – r +1) =?? How to solve this??Please show the steps.

∑_r=1¹⁰(n – r +1) =??
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∑ r=1 10 (n – r +1) =?? How to solve this??Please show the steps.

∑r=110 (n – r +1) =??How to solve this??Please show the steps.

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∑_r=1¹⁰(n – r +1) =??
How to solve this??Please show the steps.