function-machine/subtraction/easy · Set 77

8 problems
1
? → [-1] → 9 =
2
Input: 2 → [?] → 6, what is the rule? =
3
? → [×5] → 10 =
4
Input: 4 → [+10] → ? =
5
? → [-1] → 0 =
6
Input: 10 → [×5] → ? =
7
Input: 5 → [×3] → ? =
8
? → [×3] → 21 =
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