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Question

If a and d are the first term and the common difference of an AP, Sn denotes the sum to n terms of an AP. If Sn=Pn+Qn2, what are P and Q?


A

a = P + Q ; d = 2Q

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B

a = P - Q ; d = 2Q

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C

a = P + Q ; d = Q/2

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D

a = P + Q ; d = Q

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