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6. Which one of the following is a geometric sequence?

A. 8, 4, 2, 1, 1/2, 1/4,...
OB. 0, 1, 2, 3, . . .
O C. 2, -3,9%/2, -18/4
O D. -7, 10, 23, 36, ...

User Emilaz
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A is geometric sequence
Since any corresponding two terms result in the same ratio
That is

r=4/8
r=1/2


r=2/4
r=1/2


r=1/2

r=(1/2)/1
r=1//2


Since r is constant through then A is described as a Geometric sequence
User VIRA
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