If the third and seventh terms of a H.P. are 1/7, 1/15 respectively, then nth term is

If the mth and nth terms of a H.P. are n and m respectively, then its mnth term will be-

If the 4th and the 7th terms of an H.P. are 1/2 and 2/7 respectively . Find the first term.

The fourth seventh and tenth terms of a G.P. are p,q,r respectively, then :

The fourth and seventh terms of a G.P. are 1 and 1/8 respectively. Determine the G.P. Also find its nineth term.

The fourth, seventh and tenth terms of a G.P. are p,q,r respectively, then

The fourth, seventh and tenth terms of a G.P. are p,q,r respectively, then

The first term and common difference of an A.P. are a and d respectively. If mth and nth terms of this A.P. are 1/m and 1/n respectively, then the value of (a-d) is-

The fourth, seventh and tenth terms of a G.P. are p, q, r respectively, then :

The fourth and seventh term of an G.P are 1 and 1/8 respectively.Find the series and the 9th term of the series.