function-machine/addition-easy · セット 41

8 problems
1
? → [-1] → 3 =
2
? → [-1] → 0 =
3
Input: 5 → [?] → 15, what is the rule? =
4
Input: 4 → [?] → 8, what is the rule? =
5
Input: 1 → [?] → 2, what is the rule? =
6
Input: 5 → [?] → 7, what is the rule? =
7
Input: 2 → [×3] → ? =
8
Input: 7 → [?] → 21, what is the rule? =
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