三道有趣的奥数题1.一袋子里有红,黄,白三种颜色的球各100个,现从中任意取出25个,一定有多少个球的颜色相同?2.牧场上长满牧草,每天牧草都均速生长,这片牧场供15头牛吃20天,可供20头牛吃10天
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![三道有趣的奥数题1.一袋子里有红,黄,白三种颜色的球各100个,现从中任意取出25个,一定有多少个球的颜色相同?2.牧场上长满牧草,每天牧草都均速生长,这片牧场供15头牛吃20天,可供20头牛吃10天](/uploads/image/z/1262679-15-9.jpg?t=%E4%B8%89%E9%81%93%E6%9C%89%E8%B6%A3%E7%9A%84%E5%A5%A5%E6%95%B0%E9%A2%981.%E4%B8%80%E8%A2%8B%E5%AD%90%E9%87%8C%E6%9C%89%E7%BA%A2%2C%E9%BB%84%2C%E7%99%BD%E4%B8%89%E7%A7%8D%E9%A2%9C%E8%89%B2%E7%9A%84%E7%90%83%E5%90%84100%E4%B8%AA%2C%E7%8E%B0%E4%BB%8E%E4%B8%AD%E4%BB%BB%E6%84%8F%E5%8F%96%E5%87%BA25%E4%B8%AA%2C%E4%B8%80%E5%AE%9A%E6%9C%89%E5%A4%9A%E5%B0%91%E4%B8%AA%E7%90%83%E7%9A%84%E9%A2%9C%E8%89%B2%E7%9B%B8%E5%90%8C%3F2.%E7%89%A7%E5%9C%BA%E4%B8%8A%E9%95%BF%E6%BB%A1%E7%89%A7%E8%8D%89%2C%E6%AF%8F%E5%A4%A9%E7%89%A7%E8%8D%89%E9%83%BD%E5%9D%87%E9%80%9F%E7%94%9F%E9%95%BF%2C%E8%BF%99%E7%89%87%E7%89%A7%E5%9C%BA%E4%BE%9B15%E5%A4%B4%E7%89%9B%E5%90%8320%E5%A4%A9%2C%E5%8F%AF%E4%BE%9B20%E5%A4%B4%E7%89%9B%E5%90%8310%E5%A4%A9)
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