function-machine/subtraction/starter · Set 45

8 problems
1
Input: 5 → [?] → 15, what is the rule? =
2
Input: 9 → [?] → 8, what is the rule? =
3
Input: 3 → [?] → 6, what is the rule? =
4
Input: 4 → [×3] → ? =
5
Input: 8 → [-3] → ? =
6
Input: 2 → [+5] → ? =
7
Input: 10 → [?] → 30, what is the rule? =
8
? → [×2] → 16 =
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