[機統] 樂透
從考題板看來的題目,自己看完也覺得很困惑,希望有人能解答
題目:大樂透(49個號碼)中至少需買幾組才能保證中普獎(3個號碼)
重點1:『不知道』會開出哪幾個號碼
重點2:直接忽略特別號,即是49個數字選6個出來
大家一起討論看看,覺得這個題目蠻有意思的
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