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Original post by Kevyn_a
What is the method to finding the nth term to this sequence?
1, 5, 21, 85
The nth term would be (4n-1)/3 but I am not sure how to get there
1, 5, 21, 85
The nth term would be (4n-1)/3 but I am not sure how to get there
The usual difference of successive terms would give a fair hint as its a simple geometric sequence.
(edited 1 year ago)
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can someone please explain what principle domain is and why the answer is a not c?Maths
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