function-machine/addition/starter · Set 40

8 problems
1
Input: 6 → [?] → 12, what is the rule? =
2
Input: 5 → [+10] → ? =
3
? → [×3] → 21 =
4
Input: 10 → [-3] → ? =
5
Input: 4 → [?] → 20, what is the rule? =
6
? → [×2] → 14 =
7
Input: 7 → [×3] → ? =
8
Input: 6 → [?] → 18, what is the rule? =
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