I took a written exam of a forigen company with my girlfriend yesterday!
these is a question i don`t know how to answer! every brothers ,help me to see see!

Two math grads ran into each other in a shopping center! they haven`t seen each other for over 20 years.

The first grad:oh,haven`t seen you for a long time,how are you?
The second grad:yes ,i married during these time,and have three children.
first:how old are they?
second:well ,the product（乘积） of these ages is 72 and sum is the number on that building over there......
first:en,,ok ,,but ,i still don`t know !
second :oh,,sorry,forget to tell you the oldest child is just beginning to play piano.
first: really ,i see now.i aslo have a daughter,her age is the same with your oldest child.

question:how old is the first man`s child? please give the reason,and which information is useless?


             

3 4 6,

高三个孩子年龄乘积为72
三个孩子年龄之和为B
最大的一个为C
高另个两个的分别为x1 x2
有:

x1 *x2 * C = 72
x1 + x2 + C = B

解方程组就得到了~~~~

而且三个孩子年龄之和<60~~~

这样的题以前就遇到过了 虽然是换了种方式
不过不是很清楚sum is the number on that building over there......什么意思

Quote:

引用第3楼senfrans于2006-11-07 09:31发表的:
这样的题以前就遇到过了 虽然是换了种方式
不过不是很清楚sum is the number on that building over there......什么意思

同问。。。感觉象 最大的一个孩子刚会弹钢琴。。。这些完全就是猜测了。。。。

我估计是3.4.6
因为它们三个数字和是13，在西方13是个别人忌讳的数字。所以第二个人没有直接说出来。会弹钢琴，6岁差不多！

Quote:

引用第5楼flyhigh于2006-11-07 11:03发表的:
我估计是3.4.6
因为它们三个数字和是13，在西方13是个别人忌讳的数字。所以第二个人没有直接说出来。会弹钢琴，6岁差不多！

连13这个数字都考虑进去了。。。？现在的公司出题真优水平。。。慢慢的把他们的思想灌输给我们。。。
文化的侵蚀。。。

不知道是不是，只是我的猜测，不过确实没有什么线索。
他只给了乘积，也可能是让我们自由发挥吧。

6,6,2..因为13不可能存在楼房中！！

I'm confused,