If A, G, H are arithmetic, geometric and harmonic means between a and b respecti

If A, G, H are arithmetic, geometric and harmonic means between a and b respectively, then A,G,H are

2) G1,G2,…,Gn are said to be n geometric means between a and b if a,G1,…Gn,b is

3) 5th term of G.P 3,6,12,… is

4) Sum of n terms of G.P is

5) If A, G, H are arithmetic, geometric and harmonic means between a and b respectively, then A,G,H are