The mth term of a H.P. is n and the nth term is m. Prove that its rth term is mn/r.

The mth term of a H.P is n and the nth term is m . Proves that its rth term is m n//rdot

If the pth term of an A.P. is q and the qth term is p , then find its rth term.

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

If the 10^(th) term of G.P is 9 and 4^(th) term is 4 then its 7^(th) term is

If (m+1)th term of an A.P. is twice the (n+1)th term, then prove that (3m+1)th term is twice the (m+n+1)th term

Sum of infinity terms of a G.P. is 12 and the first term is 8. What is the fourth terms of the G.P is ___.

If the nth term of an A.P. is t_(n) =3 -5n , then the sum of the first n terms is ………

If the p^(th) term if an A.P. is q and the q^(th) term of an A.P is p then the r^(th) term is