function-machine/division/hard · Set 71

7 problems
1
? → [-3] → 4 =
2
? → [×2 + 3] → 15 =
3
Input: 8 → [×2] → ? =
4
Input: 3 → [-1] → ? =
5
Input: 4 → [?] → 16, what is the rule? =
6
Input: 4 → [?] → 10, what is the rule? =
7
Input: 9 → [?] → 18, what is the rule? =
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