Question

Find the common ratio for the following sequence.
27, 9, 3, 1, ...

-1?

Answer 1

it is Gp

Answer 2

R = second term/first term

Answer 3

so r = 9/27 = 1/3

Answer 4

so 1/3?

Answer 5

\[(1-x)(1+x+x^2.....+x^n)=1-x^{n+1}\]where n=0,1,2...