Find the geometric means of the following pairs of number: `a^3b\ a n d\ a b^3dot`

Find the geometric means of the following pairs of number: -8\ a n d-2.

Find the geometric means of the following pairs of number: a^(3)b and ab^(3).

Find the geometric means of the following pairs of number: 2 and 8.

Find the geometric means of the following pairs of number: 2 and 8.

Find the geometric means of the following pairs of number: -8 and -2.

Find the equation of the lines joining the following pairs of vertices : (1,\ 3,\ 0)a n d\ (0,\ 3,\ 0)dot

Find the distance between the following pairs of point: Q(3,2,-1)a n d\ B(-1,1,-1)dot

If the ratio of the arithmatic mean and the geometric mean of two positive numbers is 3:2 , then find the ratio of the geometric mean and the harmonic mean of the numbers.

The geometric mean of 3,3^(2),...,3^(n) is