If $a, b, c, d$ are in a geometric progression,then:

If $25, x - 6$,and $x - 12$ are consecutive terms of a geometric progression,then $x = \dots$

The first term of a $G.P.$ is $1$. The sum of the third term and fifth term is $90$. Find the common ratio of the $G.P.$

$A$ $G.P.$ consists of an even number of terms. If the sum of all the terms is $5$ times the sum of terms occupying odd places,then find its common ratio.

The third term of a $G.P.$ is the square of the first term. If the second term is $8$,then the $6^{th}$ term is:

If the $4^{th}$,$7^{th}$,and $10^{th}$ terms of a Geometric Progression $(GP)$ are $a, b,$ and $c$ respectively,then: