function-machine/subtraction/hard · Set 16

8 problems
1
Input: 3 → [?] → 2, what is the rule? =
2
Input: 6 → [?] → 16, what is the rule? =
3
Input: 9 → [+2] → ? =
4
? → [×3 - 2] → 28 =
5
Input: 3 → [×2 + 3] → ? =
6
? → [-1] → 5 =
7
? → [×3] → 27 =
8
Input: 5 → [-3] → ? =
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