Please can you help to find the the ninth term of this sequence: 81/8/ 27/4, 9/2, 3, ...
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Woah, Dunno what happened there sorry
So you've got a series here. And you've got to figure out what common situation you've got between successive terms.
There are a few ways to figure that out. For series there are 2 main routes you can take: 1) successive differences and 2) a common ratio.
For Successive Differences you would subtract the previous term by the one after it, and try and find a common difference.
For a Common Ratio, you would divide the succesive term by the previous one, and see if the ratio is the same.
Try these both now on this problem