function-machine/addition/hard · Set 89

8 problems
1
Input: 5 → [×2 + 3] → ? =
2
Input: 4 → [?] → 9, what is the rule? =
3
Input: 6 → [-1] → ? =
4
Input: 3 → [×2 + 1] → ? =
5
Input: 8 → [?] → 19, what is the rule? =
6
Input: 10 → [?] → 7, what is the rule? =
7
Input: 6 → [+5] → ? =
8
? → [+5] → 7 =
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