function-machine/subtraction/medium · Sada 14

8 problems
1
Input: 3 → [?] → 13, what is the rule? =
2
? → [×2 + 1] → 17 =
3
? → [-1] → 2 =
4
? → [+10] → 17 =
5
Input: 1 → [-1] → ? =
6
Input: 8 → [?] → 7, what is the rule? =
7
Input: 6 → [×5] → ? =
8
Input: 4 → [?] → 20, what is the rule? =
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