Medium · Set 84

8 problems
1
Input: 4 → [?] → 9, what is the rule? =
2
? → [×2 + 3] → 15 =
3
? → [×2] → 16 =
4
Input: 10 → [?] → 20, what is the rule? =
5
Input: 6 → [+10] → ? =
6
Input: 7 → [×2] → ? =
7
Input: 4 → [?] → 16, what is the rule? =
8
Input: 3 → [?] → 15, what is the rule? =
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