难题啊!天才们来看看吧1, 4/3+45/15+175/35+441/63+891/99=(要简便算哦)2, 有一顶少数民族的帽子帽顶部分(包括上面和侧面)是圆柱形,用黑布做;帽檐部分是一个圆环,用白布做.已知冒顶
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![难题啊!天才们来看看吧1, 4/3+45/15+175/35+441/63+891/99=(要简便算哦)2, 有一顶少数民族的帽子帽顶部分(包括上面和侧面)是圆柱形,用黑布做;帽檐部分是一个圆环,用白布做.已知冒顶](/uploads/image/z/10729083-3-3.jpg?t=%E9%9A%BE%E9%A2%98%E5%95%8A%21%E5%A4%A9%E6%89%8D%E4%BB%AC%E6%9D%A5%E7%9C%8B%E7%9C%8B%E5%90%A71%2C++++++4%2F3%2B45%2F15%2B175%2F35%2B441%2F63%2B891%2F99%3D%EF%BC%88%E8%A6%81%E7%AE%80%E4%BE%BF%E7%AE%97%E5%93%A6%EF%BC%892%2C+++++++%E6%9C%89%E4%B8%80%E9%A1%B6%E5%B0%91%E6%95%B0%E6%B0%91%E6%97%8F%E7%9A%84%E5%B8%BD%E5%AD%90%E5%B8%BD%E9%A1%B6%E9%83%A8%E5%88%86%EF%BC%88%E5%8C%85%E6%8B%AC%E4%B8%8A%E9%9D%A2%E5%92%8C%E4%BE%A7%E9%9D%A2%EF%BC%89%E6%98%AF%E5%9C%86%E6%9F%B1%E5%BD%A2%2C%E7%94%A8%E9%BB%91%E5%B8%83%E5%81%9A%EF%BC%9B%E5%B8%BD%E6%AA%90%E9%83%A8%E5%88%86%E6%98%AF%E4%B8%80%E4%B8%AA%E5%9C%86%E7%8E%AF%2C%E7%94%A8%E7%99%BD%E5%B8%83%E5%81%9A.%E5%B7%B2%E7%9F%A5%E5%86%92%E9%A1%B6)
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