If Sr, denotes the sum of the first r terms of an AP then, \(\dfrac{S_{3r} - S_{r - 1}}{S_{2r} - S_{2r-1} }\)is

If Sr, denotes the sum of the first r terms of an AP then, \(\dfrac{S

1.	If Sr, denotes the sum of the first r terms of an AP then, \(\dfrac{S_{3r} - S_{r - 1}}{S_{2r} - S_{2r-1} }\)is
A.	2r + 1
B.	2r + 3
C.	2r - 1
D.	4r + 1
Answer» B. 2r + 3

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If Sr, denotes the sum of the first r terms of an AP then, \(\dfrac{S_{3r} - S_{r - 1}}{S_{2r} - S_{2r-1} }\)is

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