function-machine/addition/hard · Set 43

7 problems
1
Input: 4 → [×2 + 3] → ? =
2
? → [-1] → 9 =
3
Input: 7 → [?] → 19, what is the rule? =
4
? → [×2 + 3] → 13 =
5
Input: 5 → [×2 + 3] → ? =
6
Input: 6 → [?] → 5, what is the rule? =
7
Input: 5 → [?] → 11, what is the rule? =
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