3772| 9
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2的倍数乘以5的倍数的结果尾数一定有0吗? |
发表于 2011-2-12 22:40:46
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发表于 2011-2-12 23:49:24
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发表于 2011-2-12 23:49:57
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发表于 2011-2-13 11:09:26
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发表于 2011-2-13 14:30:05
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