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CBSE Class 10 Answered

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 | 26 Feb, 2013, 02:55: PM
answered-by-expert Expert Answer
Now, you can easily calculate sum of first 20 terms.
Answered by | 26 Feb, 2013, 04:37: PM
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