function-machine/subtraction/medium · セット 64
8 problems
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1
Input: 10 → [+4 ×2] → ?
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2
Input: 9 → [?] → 11, what is the rule?
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3
Input: 3 → [?] → 7, what is the rule?
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4
Input: 9 → [?] → 21, what is the rule?
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5
Input: 1 → [?] → 5, what is the rule?
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6
? → [×2 + 1] → 7
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7
? → [×3 - 2] → 28
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8
? → [×2 + 3] → 23
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