function-machine/division/expert · Set 20

7 problems
1
Input: 4 → [+10] → ? =
2
Input: 7 → [×3 - 2] → ? =
3
? → [×2 + 1] → 19 =
4
? → [×5] → 15 =
5
? → [+4 ×2] → 10 =
6
Input: 3 → [?] → 13, what is the rule? =
7
Input: 9 → [?] → 21, what is the rule? =
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