function-machine/subtraction/expert · Set 71

8 problems
1
Input: 2 → [+2] → ? =
2
Input: 6 → [×2] → ? =
3
? → [×3 - 2] → 4 =
4
? → [×3 - 2] → 19 =
5
Input: 9 → [?] → 8, what is the rule? =
6
Input: 9 → [?] → 21, what is the rule? =
7
Input: 4 → [+5] → ? =
8
? → [×2] → 12 =
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