Question

Determine the common ratio of the following geometric sequence:
– 1 ; 1 ; -1 ; 1,...​

Answer 1

Answer:In GP, common ratio is determined as,

r2/r1 or r3/r2

r1=-1 ,r2=1

Common ratio =r2/r1=-1/1=-1

Step-by-step explanation:

Hope it helps.....