賓果問題 - 拼圖

By Steve
at 2010-05-31T15:39
at 2010-05-31T15:39
Table of Contents
上個禮拜員工旅遊~在車上領隊玩了一個賓果小遊戲~
玩法是這樣:
每個人拿到一張5X5的卡片,接著領隊會陸續抽出號碼,
最先湊到5個數字一條線(直橫斜都可)就可獲得獎勵~
玩的時候忽然有個問題:
運氣最好得當然是只有5個號碼就湊成一條線,
那最衰的呢?
最多可以幾個號碼還湊不出一條線?
如果推廣到NxN個格子呢?
又如果玩法改變,在5x5的遊戲中,只要有任四個數字湊成一直線就獲得獎品,
那最多可以幾個數字還湊不出一條線?
如果推廣到NxN個格子,那最多可以幾個數字還湊不(N-1)個數字一條線?
答案我有一點想法,不過我不確定我的想法有沒有問題或漏洞~
不過其實我比較想知道如果是NxN個格子,(N-K)個數字一條線有沒有通解?XD
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不知道會不會OP
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