If \[{{S}_{n}}\] denotes the sum of \[n\] terms of an arithmetic progression, then the value of \[({{S}_{2n}}-{{S}_{n}})\] is equal to

If \[{{S}_{n}}\] denotes the sum of \[n\] terms of an arithmetic progr

1.	If \[{{S}_{n}}\] denotes the sum of \[n\] terms of an arithmetic progression, then the value of \[({{S}_{2n}}-{{S}_{n}})\] is equal to
A.	\[2{{S}_{n}}\]
B.	\[{{S}_{3n}}\]
C.	\[\frac{1}{3}{{S}_{3n}}\]
D.	\[\frac{1}{2}{{S}_{n}}\]
Answer» D. \[\frac{1}{2}{{S}_{n}}\]

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If \[{{S}_{n}}\] denotes the sum of \[n\] terms of an arithmetic progression, then the value of \[({{S}_{2n}}-{{S}_{n}})\] is equal to

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