Medium · Set 30

8 problems
1
? → [-3] → 6 =
2
Input: 8 → [×2 + 1] → ? =
3
Input: 9 → [-1] → ? =
4
Input: 1 → [×3] → ? =
5
Input: 5 → [×2 + 3] → ? =
6
Input: 2 → [?] → 10, what is the rule? =
7
Input: 3 → [?] → 13, what is the rule? =
8
Input: 9 → [+2] → ? =
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