function-machine/subtraction/expert · Set 63

8 problems
1
Input: 8 → [?] → 22, what is the rule? =
2
Input: 7 → [?] → 17, what is the rule? =
3
? → [×3] → 9 =
4
Input: 1 → [?] → 3, what is the rule? =
5
Input: 7 → [+10] → ? =
6
Input: 5 → [×2] → ? =
7
Input: 10 → [?] → 12, what is the rule? =
8
? → [×2 + 1] → 17 =
Easy Math Print · easymathprint.com