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anonymous
 2 years ago
what is the sum of term of the series(1)+(2)+(3) + + (10)
what is the sum of the first five terms of the series 35+30+25 +
what is the sum of the last four terms of the series 7+9+11+ + 21
what is the sum of the first terms of the series 7+12+17+
anonymous
 2 years ago
what is the sum of term of the series(1)+(2)+(3) + + (10) what is the sum of the first five terms of the series 35+30+25 + what is the sum of the last four terms of the series 7+9+11+ + 21 what is the sum of the first terms of the series 7+12+17+

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ganeshie8
 2 years ago
Best ResponseYou've already chosen the best response.0(1)+(2)+(3) + + (10) start by identifying the common difference of this series ?

gudden
 2 years ago
Best ResponseYou've already chosen the best response.0use AP for the purpose... formula that would be used here is (n/2)(2a+(n1)d) where n = no. of terms a = first term of the AP and d = common difference
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