Asked by Anonymous

23rd term: 7, -21, 63, -189,..

6 years ago

Answered by Leo Galleguillos

Hint: All numbers in the sequence are multiples of ...

6 years ago

Answered by Damon

https://www.mathsisfun.com/algebra/sequences-sums-geometric.html

6 years ago

Answered by Damon

-3 *189 ....

6 years ago

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