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Fill in the blanks:

The sum of the series i + i2 + i3 + …. Upto 1000 terms is…………

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Given i + i2 + i3 + …. Upto 1000 terms

= (i + i2 + i3 + i4) + (i5 + i6 + i7 + i8) + … 250 brackets

Since in + in+1 + in + 2 + in + 3 = 0 where n ∈ N

= 0 + 0 + 0 … + 0

= 0

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