GP - ratio

What is the comon ratio of -8,40,-200,1000,-5000 (geometric sequence)?

Correct answer:

r =  -5

Step-by-step explanation:

a1=8 a2=40  r=a1a2=(8)40=5   Verifying Solution:  a3=a2 r=40 (5)=200 a4=a3 r=(200) (5)=1000 a5=a4 r=1000 (5)=5000

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