Question

The sum of first five terms of an AP and the sum of first 7 terms of an AP is 167 if the sum of first 10 terms of AP is 35.
Find sum of AP​

Answer 1

Given, the sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. The sum of the first ten terms of the AP is 235. We have to find the sum of the first 20 terms. Therefore, the sum of the first twenty terms is 970

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Answer 2

Answer:

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Step-by-step explanation:

Given, the sum of the first five terms of an AP and the sum of the first seven terms of the same AP is 167. The sum of the first ten terms of the AP is 235. We have to find the sum of the first 20 terms. Therefore, the sum of the first twenty terms is 970