function-machine/addition/medium · Набор 22

8 problems
1
Input: 7 → [?] → 21, what is the rule? =
2
? → [×3 - 2] → 1 =
3
Input: 4 → [×2 + 1] → ? =
4
? → [×2] → 6 =
5
Input: 2 → [?] → 4, what is the rule? =
6
? → [×2 + 1] → 3 =
7
Input: 3 → [?] → 0, what is the rule? =
8
? → [+2] → 4 =
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