同志们问道数学题，if 500 is the multiple of 100that is closest to x and 400 is the multiple of 100 that is closest to y , which multiple of 100 is closest to x+y ?
1> x<500
2> y<400
选e
谁会啊？
求解答作者: hanshipeng 时间: 2011-11-29 21:03
恩，谢谢，明白了，哈哈
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