问大家一道数学题。。实在是不明白。。高人指点

zscsl

Q23:

 

+	x	y	z
d			m
e		n
f

 

 

The figure above shows two entries, indicated by m and n, in an addition table.  What is the value of n + m?

(1)     d + y = -3

(2)     e + z = 12

                  

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

jenny521

n=e+y；m=d+z；问m+n=?
很清楚了

mickleon

主要是看懂那个表格表示了：横向元素+总想元素的合值……
楼上正解C

zscsl

在哪里看出是合值的意思呢？

mickleon

那个……左上角的加号……
还有题中说的“in an addition table”