function-machine/multiplication/easy · 套题 90

8 problems
1
Input: 8 → [?] → 13, what is the rule? =
2
Input: 5 → [?] → 4, what is the rule? =
3
Input: 7 → [?] → 35, what is the rule? =
4
Input: 10 → [?] → 20, what is the rule? =
5
? → [×5] → 15 =
6
? → [-1] → 6 =
7
? → [-3] → 5 =
8
Input: 2 → [?] → 7, what is the rule? =
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