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

2 years ago

Answers : (1)

Arun
24742 Points
							
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)
2 years ago
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