function-machine/addition/medium · セット 71
8 problems
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日付：
1
? → [+5] → 10
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2
? → [+5] → 15
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3
Input: 3 → [?] → 0, what is the rule?
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4
Input: 10 → [?] → 28, what is the rule?
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5
Input: 7 → [?] → 6, what is the rule?
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6
Input: 10 → [+4 ×2] → ?
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7
Input: 2 → [?] → 10, what is the rule?
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8
Input: 9 → [+4 ×2] → ?
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