3道数学题,.【第一题】用4,4,7,7算24点用4,-4,-7,-7算24点【第二题】小明背对小亮,让小亮按下列四个步骤操作:1、分发左、中、右三堆牌,每堆牌不少于两张,且各堆牌张数相同.2、从左堆牌拿出
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![3道数学题,.【第一题】用4,4,7,7算24点用4,-4,-7,-7算24点【第二题】小明背对小亮,让小亮按下列四个步骤操作:1、分发左、中、右三堆牌,每堆牌不少于两张,且各堆牌张数相同.2、从左堆牌拿出](/uploads/image/z/12601499-59-9.jpg?t=3%E9%81%93%E6%95%B0%E5%AD%A6%E9%A2%98%2C.%E3%80%90%E7%AC%AC%E4%B8%80%E9%A2%98%E3%80%91%E7%94%A84%2C4%2C7%2C7%E7%AE%9724%E7%82%B9%E7%94%A84%2C-4%2C-7%2C-7%E7%AE%9724%E7%82%B9%E3%80%90%E7%AC%AC%E4%BA%8C%E9%A2%98%E3%80%91%E5%B0%8F%E6%98%8E%E8%83%8C%E5%AF%B9%E5%B0%8F%E4%BA%AE%2C%E8%AE%A9%E5%B0%8F%E4%BA%AE%E6%8C%89%E4%B8%8B%E5%88%97%E5%9B%9B%E4%B8%AA%E6%AD%A5%E9%AA%A4%E6%93%8D%E4%BD%9C%EF%BC%9A1%E3%80%81%E5%88%86%E5%8F%91%E5%B7%A6%E3%80%81%E4%B8%AD%E3%80%81%E5%8F%B3%E4%B8%89%E5%A0%86%E7%89%8C%2C%E6%AF%8F%E5%A0%86%E7%89%8C%E4%B8%8D%E5%B0%91%E4%BA%8E%E4%B8%A4%E5%BC%A0%2C%E4%B8%94%E5%90%84%E5%A0%86%E7%89%8C%E5%BC%A0%E6%95%B0%E7%9B%B8%E5%90%8C.2%E3%80%81%E4%BB%8E%E5%B7%A6%E5%A0%86%E7%89%8C%E6%8B%BF%E5%87%BA)
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