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General Form of an AP

If S r denote...

Question

If S_rdenotes the sum of the first r terms of an AP . Then find

S_3n: (S_2n- S_n)

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S_{r}

denotes the sum of the first r terms of an AP. Then

S_{3 n} : (S_{2 n} - S_{n})

S_{r}

denotes the sum of the first

r

terms of an A.P, then

S_{3 n} : (S_{2 n} - S_{n})

Q. If S_r denotes the sum of the first r terms of an A.P. Then , S_3n: (S_2n − S_n) is

(a) n

(b) 3n

(c) 3

(d) none of these

S_{r}

denotes the sum of the first

r

A P

\frac{S_{3 r} - S_{r - 1}}{S_{2 r} - S_{2 r - 1}}

S_{n}

denote the sum of first n terms of an AP and

3 S_{n} = S_{2 n}

S_{3 n} : S_{2 n}

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