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分享微软面试之智力题!!大家快来回答,很简单!!
一辆汽车沿着斜坡向上爬行的平均速度是30km/h,请问:用多快的速度向下行驶,才能使总的平均速度是60km/h?
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水清无鱼 2001-12-30
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30km/h
big_s 2001-12-28
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都忘记了！
siyuan79 2001-12-28
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不能算的出来的。
cocoboy 2001-12-28
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We provide X as the speed,t1 as time the car up,t2 as time the car down,S as the length of the brea.We can obtain the following equations:
2S/(t1+t1)=60,
t1 = s/30,
t2 = s/X,
we obtain,
2S/(S/30 + S/X)=60 ,
=>30/x = 0,
=>x-->OO.
2S/(t1+t1)=60,
t1 = s/30,
t2 = s/X,
we obtain,
2S/(S/30 + S/X)=60 ,
=>30/x = 0,
=>x-->OO.
binglex 2001-12-28
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no way.
t - time, s - speed
tup = miles/30;
tneed = 2miles/60 = tup;
tdown = tneed - tup = 0;
sdown = miles/tdown;
t - time, s - speed
tup = miles/30;
tneed = 2miles/60 = tup;
tdown = tneed - tup = 0;
sdown = miles/tdown;
gernal_dn 2001-12-28
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不能算智力题吧?只考了应急反应
qinfeng2001 2001-12-28
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面试的时候可以拿笔算吗？如果不行，我就答不出了。
抱朴守拙 2001-12-28
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无穷快
屁股冒烟啊
屁股冒烟啊
kDolphin 2001-12-27
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同意
dianqiao2000 2001-12-27
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屁股冒烟啊
wyzegg 2001-12-27
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无穷快
