The sum of the first five terms of an AP and the sum of first seven terms of the same AP is 167 if the sum of the first ten terms of the AP is 235 find the sum of the first twenty terms of the AP

Asked by  | 26th Feb, 2013, 02:55: PM

Expert Answer:

Now, you can easily calculate sum of first 20 terms.

Answered by  | 26th Feb, 2013, 04:37: PM

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