If-S-1-S-2-S-3-be-the-sum-of-n-2n-3n-terms-respectively-of-an-AP-then- Tinku Tara June 14, 2023 None 0 Comments FacebookTweetPin Question Number 11977 by 786786AM last updated on 08/Apr/17 IfS1,S2,S3bethesumofn,2n,3ntermsrespectivelyofanAP,then Answered by ajfour last updated on 08/Apr/17 S1=n2[2a+(n−1)d]S2=n[2a+(2n−1)d]S3=3n2[2a+(3n−1)d]S2−2S1=n2dS3−3S1=3n2(2nd)=3n2d⇒S3−3S1=3(S2−2S1)orS3=3(S2−S1). Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: The-solution-of-the-equation-x-2-x-1-1-is-Next Next post: If-the-sum-of-first-p-terms-first-q-terms-and-first-r-terms-of-an-AP-be-x-y-and-z-respectively-Then-x-p-q-r-y-q-r-p-z-r-p-q-is- Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Save my name, email, and website in this browser for the next time I comment.
![S_1 =(n/2)[2a+(n−1)d] S_2 =n[2a+(2n−1)d] S_3 =((3n)/2)[2a+(3n−1)d] S_2 −2S_1 = n^2 d S_3 −3S_1 =((3n)/2)(2nd)=3n^2 d ⇒ S_3 −3S_1 =3(S_2 −2S_1 ) or S_3 =3(S_2 −S_1 ) .](https://www.tinkutara.com/question/Q11981.png)