function-machine/mixed-ops/expert · Set 90

8 problems
1
Input: 2 → [?] → 7, what is the rule? =
2
Input: 8 → [×3] → ? =
3
Input: 6 → [?] → 18, what is the rule? =
4
Input: 4 → [+5] → ? =
5
Input: 6 → [×3] → ? =
6
Input: 3 → [×5] → ? =
7
? → [+2] → 12 =
8
Input: 3 → [?] → 15, what is the rule? =
Easy Math Print · easymathprint.com