function-machine/subtraction/starter · セット 40

8 problems
1
Input: 7 → [×2] → ? =
2
Input: 6 → [+2] → ? =
3
Input: 9 → [-1] → ? =
4
? → [+5] → 7 =
5
? → [+5] → 11 =
6
Input: 2 → [?] → 1, what is the rule? =
7
Input: 3 → [?] → 15, what is the rule? =
8
Input: 5 → [?] → 2, what is the rule? =
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