What Is The Geometric Sequence Of The Followings? 81,54,36…5th Term 64,-96,144…5th Ter…

What is the geometric sequence of the followings?

81,54,36…5th term

64,-96,144…5th term

45,15,5…9th term

1). is 2/3
2). is -3/2
3). is 1/3

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