Let \[{{S}_{n}}\]denotes the sum of \[n\] terms of an A.P. If \[{{S}_{2n}}=3{{S}_{n}}\], then ratio \[\frac{{{S}_{3n}}}{{{S}_{n}}}=\] [MNR 1993; UPSEAT 2001]

Let \[{{S}_{n}}\]denotes the sum of \[n\] terms of an A.P. If \[{{S}_{

1.	Let \[{{S}_{n}}\]denotes the sum of \[n\] terms of an A.P. If \[{{S}_{2n}}=3{{S}_{n}}\], then ratio \[\frac{{{S}_{3n}}}{{{S}_{n}}}=\] [MNR 1993; UPSEAT 2001]
A.	4
B.	6
C.	8
D.	10
Answer» C. 8

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Let \[{{S}_{n}}\]denotes the sum of \[n\] terms of an A.P. If \[{{S}_{2n}}=3{{S}_{n}}\], then ratio \[\frac{{{S}_{3n}}}{{{S}_{n}}}=\] [MNR 1993; UPSEAT 2001]

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