function-machine/subtraction/medium · Sett 57

8 problems
1
Input: 4 → [?] → 1, what is the rule? =
2
Input: 1 → [-1] → ? =
3
Input: 6 → [+5] → ? =
4
Input: 9 → [×5] → ? =
5
Input: 5 → [+2] → ? =
6
Input: 3 → [×3] → ? =
7
Input: 6 → [?] → 30, what is the rule? =
8
Input: 7 → [?] → 9, what is the rule? =
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