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标题: help please prep-87 addition table [打印本页]

作者: shanefeng 时间: 2009-12-16 12:38
标题: help please prep-87 addition table
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+	x	y	z
4	1	-5	m
e	7	n	10
f	2	-4	5

In the addition table shown above, what is the value of m + n ?

(A) -19
(B) 4
(C) 5
(D) 6
(E) 22

作者: juange1014 时间: 2009-12-16 19:15
我之前也不明白是什么意思来的，问了一个学理工的哥们，

后来发现Addition table 就是这么理解，矩阵里的每一个数字都应该等于最左边的和最上边的数字相加。。。用这个方法可以计算出答案

作者: shanefeng 时间: 2009-12-16 22:41
got it. thanks a lot

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