function-machine/addition/expert · Set 92

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