May 2021 3 105 Report
環狀排列和珠狀排列的問題(1)

1. 29張圓形卡紙,其中5張紅色、7張藍色、8張黃色、9張綠色,排成環狀,問排法若干?

2. 30張圓形卡紙,其中6張紅色、7張藍色、8張黃色、9張綠色,排成環狀,問排法若干?

3. 28張圓形卡紙,其中4張紅色、6張藍色、8張黃色、10張綠色,排成環狀,問排法若干?

4. 30張圓形卡紙,其中6張紅色、6張藍色、6張黃色、12張綠色,排成環狀,問排法若干?

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