function-machine/subtraction/hard · Set 25

8 problems
1
Input: 2 → [?] → 6, what is the rule? =
2
? → [+4 ×2] → 18 =
3
Input: 1 → [?] → 6, what is the rule? =
4
Input: 2 → [+5] → ? =
5
Input: 3 → [?] → 2, what is the rule? =
6
? → [×5] → 15 =
7
? → [+5] → 13 =
8
? → [-1] → 1 =
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