Find the 20th term and nth term of the G.P `5/2,5/4,5/8,….`

Find the 20th term from the last term of the AP:3,8,13,….243.

Find the 20th term from the last term of the AP:3,8,13,….253.

Find the sum to n term of the G.P 1/2-1/4+1/8-1/16+ …....

4th term, 10th term and nth term of an A.P. are 7, 25, 58 respectively. Find 1st term, C.D. and the value of n.

Find the 7^(th) term of the AP 13/5,7/5,1/5,-1…….

Find the nth terms of the following sequences. 1/2,1/4,1/8,1/16 ,……

Find the nth terms of the following sequences. 2,4,6,8,….

Find the nth term of 6,8,10,….

Find the nth terms of the following sequences. 1/2,2/3,3/4,4/5 ,…..

the 6th term of an A.P. is -10 and its 10th term -26 determine the 15 term of the A.P.