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Openai/6955e0f9-71f0-8005-b29b-45f8f5be7e41
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=== Assistant: 明白啦 😄 你這個「7 步 × 8 因素」本質就是在做排列/組合計數。 === 明白啦 😄 你這個「7 步 × 8 因素」本質就是在做排列/組合計數。 我先用最標準、最直覺的規則算: : ==== 每一步 8 種,7 步: ==== 87=2,097,1528^7 = 2,097,15287=2,097,152 ✅ 總共有 2,097,152 個組合 ==== 每一步 3 種,7 步: ==== 37=2,1873^7 = 2,18737=2,187 ✅ 總共有 2,187 個組合 ==== 第 7 步固定 = c(1 種),前面 6 步各 3 種: ==== 36=7293^6 = 72936=729 ✅ 總共有 729 個結果 如果你其實還有一個隱含規則(例如「7 步必須包含 abc 都至少出現一次」那種),我也可以再幫你算那個版本。
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