function-machine/subtraction/medium · Set 20

8 problems
1
? → [×3] → 27 =
2
Input: 3 → [?] → 7, what is the rule? =
3
Input: 8 → [?] → 16, what is the rule? =
4
Input: 3 → [+5] → ? =
5
? → [×5] → 35 =
6
Input: 8 → [+4 ×2] → ? =
7
Input: 5 → [×3] → ? =
8
Input: 8 → [×2 + 1] → ? =
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