标题: 还有几天就上战场了，求助NN们一道数学题 [打印本页] 作者: 卢静changsha 时间: 2010-3-28 11:54 标题: 还有几天就上战场了，求助NN们一道数学题 If 500 is multiple of 100 that is closest to x and 400 is multiple of 100 that is closest to y, which multiple of 100 is closest to x+y? 1）x<500 2)y<400 有哪位好心的nn能帮我翻译一下这道题啊，实在没看懂什么意思作者: 卢静changsha 时间: 2010-3-28 11:57
UP作者: 卢静changsha 时间: 2010-3-28 12:00
哦，找到了，是PP2的155题作者: edwardelric 时间: 2010-3-28 12:06
450<x<550 350<y<450
1)x<500 2)y<400
1)ALONE 800<X+Y<950 the multiple of 100 closest to x+y can be 800 or 900
2)ALONE 800<X+Y<950 the multiple of 100 closest to x+y can be 800 or 900
1)2)TOGETEHER 800<X+Y<900 the multiple of 100 closest to x+y can be 800 or 900