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There is a sequence of numbers such that every entry except for the first entry is the arithmetic mean of its two neighboring entries. The 27th entry is 94 and the 94th entry is 27. What's the first entry?

 Apr 8, 2021
 #1
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Hey there, Itachiochikakujo!

 

PM already answered that question here: https://web2.0calc.com/questions/sequences_7

 Apr 8, 2021

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