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Option (3)

Step-by-step explanation:

For a geometric progression,

First term of the progression = a

Common ratio of each successive term to the previous term = r

Recursive formula for geometric progression will be,

And

Following this rule for the G.P. given in the question,

Therefore, from the recursive formula,

Common ration 'r' = -(1.5)

Option (3) will be the correct option.

can i get the link to the assignment?

step-by-step explanation:

the answer is:

mean: 6

mad: 2.14