If Sn denotes the sum of first n terms of an A.P., and S2n = 3Sn then S3nSn is equal to....

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If Sn denotes the sum of first n terms of an AP, prove that S30=3[S20-S10] (CBSE 2015) 30/1/3

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If Sn denotes the sum of first n terms of an A.P., and S2n = 3Sn then S3nSn is equal to....

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If Sn denotes the sum of first n terms of an A.P., prove that S12 = 3(S8 - S4)

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If Sn denotes the sum of the first n terms of an A.P., prove that S30=3(S20 - S10). [CBSC 2014]

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Let S_n denotes the sum of the first of n termsof A.P. and S_(2n)=3S_n . then the ratio S_(3n):S...

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In an AP if S5 + S7 = 167 and S10 = 235. Then find the AP, where Sn denotes the sum of its first n

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If Sn denotes the sum of the first n terms of an AP Then prove that- S30 = 3(S20 – S10) | AP...

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If Sn denotes the sum of the first n terms of an A.P., prove that S30 = 3(S20-S10).

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if Sn denotes the sum of first n terms of an A.P prove that S12 = ( S8 - S4 )

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If Sn denotes the sum of n terms of an arithmetic progression, then the value of S2n-Sn is equal....

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Let Sn denotes the sum of n terms of an A.P. If S2n=3Sn, then ratio S3nSn...

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If Sn denotes the sum of first n terms of an A.P. prove that S12=3(S8-S4)

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Let Sn denotes the sum of the first n terms of an A.P.. If S4=16 and S6=−48, then S10 is equal to

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If S_n denotes the sum of first n terms of an A.P., prove that S_(12)=3(S_8-S_4) . | 10 | ARITHM...

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If Sn denotes, the sum of the first n terms of an A.P. prove that S12 = 3(S8 - S4)

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If Sn=nP+n/2(n-1)Q, where Sn denotes the sum of the first n terms of an Arithmetic Progression (AP)