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Find the following sums : (i) 5 + 6 + ...

Find the following sums :
(i) `5 + 6 + 7 +…+ 100`
(ii) ` 15^(2) + 16^(2) +…+ 30^(2)`
` (iii) 4^(3)+ 8^(3) + 12^(3) +…+ 40^(3)`

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(i) 5040
(ii) 8440
(iii) 193600
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AAKASH INSTITUTE-SEQUENCES AND SERIES -Try Yourself
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