Question-192367 Tinku Tara June 4, 2023 Arithmetic 0 Comments FacebookTweetPin Question Number 192367 by Rupesh123 last updated on 15/May/23 Answered by mehdee42 last updated on 15/May/23 tr=r−32⇒tr+1=r−12&tr+2=r+12&tr+3=r+32⇒trtr+1tr+2tr+3=r4−52r2+2526⇒∑nr=11+trtr+1tr+2tr+3=∑nr=1r4−52r2+2516=∑nr=1(r2−54)=n(n+1)(2n+1)6−54n✓ Commented by Rupesh123 last updated on 15/May/23 Nice, sir! Terms of Service Privacy Policy Contact: info@tinkutara.com FacebookTweetPin Post navigation Previous Previous post: Question-126827Next Next post: A-container-is-50-full-of-water-at-triple-point-phase-It-s-Isolated-and-subjected-to-space-system-defining-no-gravity-acting-on-the-particles-Which-state-of-matter-is-now-more-dominant-solid- Leave a Reply Cancel replyYour email address will not be published.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.