證明真假 - 拼圖

By Hardy
at 2010-08-30T09:41
at 2010-08-30T09:41
Table of Contents
桌面上四張牌 皆有正反面 正面為實心 反面為空心
┌───┐┌───┐┌───┐┌───┐
│ ││ ││ ││ │
│ ● ││ □ ││ ▽ ││ ▲ │
│ ││ ││ ││ │
└───┘└───┘└───┘└───┘
甲:若要證明"●的背面一定是▽"
你至少要翻____張牌,_______(哪些牌)來確定我這句話是正確的
正解唯一...另外請看完題目馬上回答...討論串很多地雷...
--
┌───┐┌───┐┌───┐┌───┐
│ ││ ││ ││ │
│ ● ││ □ ││ ▽ ││ ▲ │
│ ││ ││ ││ │
└───┘└───┘└───┘└───┘
甲:若要證明"●的背面一定是▽"
你至少要翻____張牌,_______(哪些牌)來確定我這句話是正確的
正解唯一...另外請看完題目馬上回答...討論串很多地雷...
--
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