function-machine/mixed-ops/starter · Set 57

8 problems
1
Input: 10 → [?] → 20, what is the rule? =
2
Input: 10 → [?] → 15, what is the rule? =
3
Input: 9 → [+2] → ? =
4
? → [+2] → 11 =
5
Input: 5 → [?] → 4, what is the rule? =
6
Input: 1 → [?] → 6, what is the rule? =
7
Input: 6 → [?] → 8, what is the rule? =
8
? → [+5] → 15 =
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