Math, asked by mohan2110, 11 months ago

Find the sum of 3,7,11,… up to 40 terms.

Answers

Answered by sanjana953

2

Sum of terms=210

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Answered by Sarvocch786

4

a=3 d=4 n=40

s=n/2[2a+(n-1)×d]

s=40/2[2×3+(39×4)]

s=20[6+156]

s=20×162

s=3240

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