1
Input: 5 → [?] → 15, what is the rule? =
2
Input: 4 → [?] → 14, what is the rule? =
3
Input: 10 → [?] → 9, what is the rule? =
5
Input: 6 → [?] → 11, what is the rule? =
6
Input: 6 → [?] → 30, what is the rule? =
7
Input: 1 → [?] → 11, what is the rule? =