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Function  is defined on positive integers as follows:
\(C(n) = \begin{cases} \dfrac n 2 & \text{if $n$ is even}, \\ 3n+1 & \text{if $n$ is odd}. \end{cases}\)

Final all such that C^3(n)=16

 

The thing is that I go to 2 of the answers. being 128, and 20 but i cant find the others.

 Dec 3, 2022
edited by Guest  Dec 3, 2022
edited by Guest  Dec 3, 2022
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The other solutions are 4, 24, 48, 65, and 96.

 Dec 3, 2022

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