function-machine/multiplication/medium · Set 81

8 problems
1
Input: 7 → [?] → 9, what is the rule? =
2
Input: 7 → [?] → 17, what is the rule? =
3
? → [+2] → 5 =
4
Input: 5 → [×2 + 1] → ? =
5
? → [-1] → 9 =
6
? → [×3 - 2] → 28 =
7
? → [×3] → 27 =
8
Input: 7 → [?] → 19, what is the rule? =
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