function-machine/division/medium · Set 84

8 problems
1
Input: 7 → [?] → 35, what is the rule? =
2
Input: 7 → [+2] → ? =
3
? → [×2 + 3] → 9 =
4
Input: 1 → [?] → 5, what is the rule? =
5
Input: 9 → [×2] → ? =
6
Input: 5 → [+5] → ? =
7
? → [+2] → 9 =
8
Input: 9 → [?] → 19, what is the rule? =
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