function-machine/mixed-ops/expert · Set 73

8 problems
1
Input: 4 → [?] → 3, what is the rule? =
2
? → [+5] → 11 =
3
Input: 6 → [?] → 20, what is the rule? =
4
Input: 6 → [+4 ×2] → ? =
5
? → [×5] → 15 =
6
Input: 6 → [?] → 15, what is the rule? =
7
Input: 8 → [?] → 13, what is the rule? =
8
? → [×2 + 1] → 15 =
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