If (i) `-1.0 , -1.5, -2.0, -2.5`, ……… and (ii) `-1, -3, -9, -27, …….` are two progressions, then which of them is a Geometric Progression?

What is the product of first 2n+1 terms of a geometric progression ?

Find the sum to infinity of the following Geometric Progression: 1,1/3,1/9,...

If a, b, C are direction ratios of line which lies 2 and 10 and such that (i) the sum of a, b, c is 19 (ii) a, b, 11 are in arithmetic progression (iii) a, c, 27 are in geometric progression then the values of a, b, c are

Find the sum to infinity of the following Geometric Progression: 6,1.2,0.24,dots

Find the sum to infinity of this geometric progression. 1,1/2,1/2^2,1/2^3,……

Find the sum of the following geometric progression: 1,3,9,27, to 8 terms.