How to do Pre calculus..find the nth term?

James

New member
6, 12, 18, 24, 30
60,58, 56, 54, 52
1/8, 1/4, 3/8, 1/2, 5/8
1, 4, 16, 64 256
How!!! to do them and There some formula I have to do can any of you give me the answers in the next 5 minutes.
 
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