Starter · Set 79

8 problems
1
Input: 9 → [-1] → ? =
2
Input: 4 → [×2] → ? =
3
Input: 1 → [×3] → ? =
4
Input: 10 → [?] → 20, what is the rule? =
5
Input: 2 → [×2] → ? =
6
Input: 3 → [?] → 9, what is the rule? =
7
? → [-3] → 1 =
8
Input: 6 → [-3] → ? =
Easy Math Print · easymathprint.com