function-machine/subtraction/medium · セット 70
8 problems
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日付：
1
Input: 8 → [×2 + 1] → ?
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2
Input: 5 → [?] → 18, what is the rule?
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3
? → [-1] → 6
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4
Input: 10 → [?] → 30, what is the rule?
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5
? → [+2] → 3
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6
Input: 10 → [×2 + 3] → ?
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7
? → [+4 ×2] → 12
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8
? → [×3] → 27
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