Math, asked by mansiss, 1 year ago

the sum of first 20 terms of an ap is one third of the sum of the next 20 terms. if the first term is 1 then find the sum of first 30 terms

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Answered by Feliciano9

7

I think dis would help plss mark my answer as brainliest

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mansiss: pls write it clearly

mansiss: i didnt understood first 3 steps

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