8. If the sum of n terms of an A.P. is (pn + qn), where p and q are constants,
find the common difference.
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Answer:
It doesn't have any common difference.
Step-by-step explanation:
Because first of all to be an AP the sum of n terms must of the form An square +Bn where A and B are constants. since this one is not of the given form so it isn't an AP.
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