Contact us
Choose a category below so we can get back to you as quickly as possible.
1/(2*5)+1/(5*8)+1/(8*11)+1/(11*14)+1/(14*17) =(1/3)[(1/2-1/5)+(1/5-1/8)+(1/8-1/11)+(1/11-1/14)+(1/14-1/17) ] =(1/3)( 1/2 -1/17) =5/34
We and our partners use cookies and other technologies to analyze traffic and optimize your experience. View more info and control your cookies settings at any time in our Cookies Policy.