国际顶尖MBA申请交流平台--TOPWAY MBA

标题: 两道数学求助,谢！ [打印本页]

作者: lnlynn 时间: 2002-11-4 20:10 标题: 两道数学求助,谢！

两道数学求助，括号里是答案，谢！
PS :Five people meet and exchange handshadkes.if exactly 3 of the people each shake hands with 3 people,and if 1 person shake hands with only 1other person,then what is the least number of handshakes that could have been exchanged?(6)

DS: Vanda’s butcher shop sells packages of gound turkey and ground beef,if the price of a pound of ground turkey less than that of a pound of ground reef?
(1) the price of a package of ground turkey is 30 percent greater than the price for a package of ground beef.
(2) A package of ground turkey weighs 25 percent more than a package of ground beef.(c)
[em17]

作者: robert 时间: 2002-11-4 21:16

答:
1.画一个图，分别是a,b,c,d,e五个点。令a只和一个点连，不妨设为b.然后穷举，并使得所画的线最少，答案是六条线，所以是6

2.由(1)得不出，因为只得到一包turkey的价格=130%一包beef的价格
由(2)也得不出,只得到一包turkey的重量 = 125%一包beef的重量

由(1),(2)知，同等重量的turkey和beef，turkey的价格>beef的价格，所以选c

作者: lnlynn 时间: 2002-11-4 21:27

谢谢二当家！

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