an A.P. a G.P. and a H.P. have the same first term & the same last term and the same odd numberof terms . Middle terms of 3 series are in

An A.P., and a H.P. have the same first and last terms and the same odd number of terms. The middle terms of the three series are in

An AP, GP , HP have same first and last term and same odd number of terms .middle term of three series are in

Let an A.P. a G.P. and a H.P. of positive terms have the same first term a, the same last term b and the same numberof terms (2n+1). Let x,y,z be the (n+1)th terms respectively of the A.P., G.P. and H.P. respectively. On the basis of above information anwer the following question: x,y,z are in (A) A.P. (B) G.P. (C) H.P. (D) none of these

If an A.P., a G.P. and a H.P. have the same first term and same (2n+1) th term and their (n+1)^n terms are a,b,c respectively, then the radius of the circle. x^2+y^2+2bx+2ky+ac=0 is

A G.P. has first term a=3 , last term l=96 and sum of n terms S=189 . Find the number of terms in it.

An A.P. and a G.P. of positive terms have the same first term and the sum of their first, second and third terms are respectively, 1, 1/2 and 2. Show that the sum of their fourth terms is 19/2

In an A.P., the first term is 2, the last term is 29 and sum of the terms is 155. Find the common difference of the A.P.

In an A.P., the first term is 2, the last term is 29 and sum of the terms is 155. Find the common difference of the A.P.

In an A.P. the third term is four times the first term, and the sixth term is 17 , find the series.