function-machine/addition/starter · Set 58

8 problems
1
? → [-1] → 2 =
2
Input: 1 → [?] → 0, what is the rule? =
3
Input: 10 → [?] → 20, what is the rule? =
4
Input: 10 → [×3] → ? =
5
Input: 3 → [+5] → ? =
6
Input: 1 → [?] → 3, what is the rule? =
7
Input: 9 → [×5] → ? =
8
Input: 4 → [?] → 6, what is the rule? =
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