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如图,由6个小正方形组成的2×3网格中,任意选取5个小正方形并涂黑,则黑色部分的图形是轴对称图形的概率是 .
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教案备课库《2018年山东省淄博市临淄区中考数学一模试卷》真题及答案
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如图由6个小正方形组成的2×3网格中任意选取5个小正方形并涂黑则黑色部分的图形是轴对称图形的概率是
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如图所示在3×3正方形网格中已有三个小正方形被涂黑将剩余的白色小正方形再任意涂黑一个则所得黑色图案是
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