function-machine/subtraction/hard · Sada 88

7 problems
1
Input: 7 → [?] → 17, what is the rule? =
2
Input: 2 → [?] → 12, what is the rule? =
3
? → [+4 ×2] → 28 =
4
Input: 3 → [-3] → ? =
5
Input: 4 → [?] → 3, what is the rule? =
6
? → [×3] → 18 =
7
? → [+5] → 9 =
Easy Math Print · easymathprint.com