S2n=3Sn prove that S3n/Sn=6

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Prove that S_n, S_2n-S_n, S_3n-S_2n, S_4n-S_3n are in A.P, find out the common difference.

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Sn denotes the sum of first

n

terms of the A.P.

1, 2, 3, 4, . . . . . .

, then

S_{2 n} = 3 S n

\frac{S_{3 n}}{S n} = ?

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Let

S_{n}

denote the sum of the first n terms of an A.P. If

S_{2 n} = 3 S_{n}

, then

\frac{S_{3 n}}{S_{n}} =

View Solution

S_{n}

denotes the sum of first

n

terms of an

A . P .

and

S_{2 n} = 3 S_{n}

, then

\frac{S_{3 n}}{S_{n}}

is equal to

View Solution

Let

S_{n}

denote the sum of first

n

terms of an

A P

, If

S_{2 n} = 3 S_{n}

then find the ratio

S_{3 n} / S_{n}

View Solution