If the 20th term of a H.P. is 1 and the 30th  term is -1/17, then find its largest term.

If the fourth term of a H.P is 1/3 and 7 th term is 1/4 ,then 16 th term is

If the 7^(th) terms of a H.P. is 8 and the 8^(th) term is 7. Then find the 28^(th) term

If the 2^(nd) term of an A.P. is 8 and the 5 ^(th) term is 17, find its 19^(th) term.

If the third term of an A.P. is 12 and 10th term is 26, then its 20th term is :

If the 9 th term of an A.P.is 35 and the 19th term is 75. Find the 20 th term

If the 10^(th) term of an A.P. is 1/5 and its 20^(th) term is 1/3 , then the sum of its first 150 terms is: