function-machine/addition/medium · Sada 55

8 problems
1
Input: 5 → [?] → 18, what is the rule? =
2
Input: 1 → [?] → 3, what is the rule? =
3
Input: 5 → [?] → 13, what is the rule? =
4
? → [×2 + 1] → 15 =
5
Input: 7 → [+5] → ? =
6
Input: 10 → [?] → 15, what is the rule? =
7
? → [×2 + 3] → 7 =
8
? → [×3] → 12 =
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