Mixed Medium · Set 13

8 problems
1
Input: 4 → [?] → 16, what is the rule? =
2
? → [-1] → 2 =
3
? → [-1] → 5 =
4
? → [+10] → 13 =
5
? → [-3] → 1 =
6
Input: 10 → [-1] → ? =
7
Input: 7 → [?] → 19, what is the rule? =
8
Input: 9 → [×5] → ? =
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