If \({S_n} = nP + \frac{{n\left( {n - 1} \right)Q}}{2}\), where Sn denotes the sum of the first n terms of an AP, then the common difference is

If \({S_n} = nP + \frac{{n\left( {n - 1} \right)Q}}{2}\), where Sn den

1.	If \({S_n} = nP + \frac{{n\left( {n - 1} \right)Q}}{2}\), where Sn denotes the sum of the first n terms of an AP, then the common difference is
A.	P + Q
B.	2P + 3Q
C.	2Q
D.	Q
Answer» E.

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If \({S_n} = nP + \frac{{n\left( {n - 1} \right)Q}}{2}\), where Sn denotes the sum of the first n terms of an AP, then the common difference is

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