# In an AP if the sum of first n terms is5n2+2n then find the second term?

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• In an AP if the sum of first n terms is5n2+2n then find the second term?

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the sum of the first n terms of the AP is equal to half of the sum of the next n terms of the same AP.find the ratio of the sum of the first 3n terms of ...
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Arithmetic Sequences and Series ... Question: 9 The sum of first n terms ... use Sn = = 30+14 ,a=2 & r = , then n=7]Question:6 Find the sum ...