都是ETS真题! 拜托请解释!
X 3
8
Y Z
48. In the figure above, are the sums of the 3 numbers along each diagonal equal?
(1)z=3 (2)y-x=0
A):C [F.33, Q.7]
57.If S is an infinite set of real numbers, is there a number in S that is less than every number in S?
(1)Every number in S is an integer. (2)Every number in S is positive.
A):C [F.25. Q.24]
59. 4 dollar amounts, w, x, y, and z, were invested in a business. Which amount was greatest?
(1)y[此贴子已经被作者于2003-7-14 19:13:36编辑过]作者: fengqiwu 时间: 2003-7-14 19:48
48、对角线的数字和相等，应有有y+3=x+z.条件z=3和x=y单独都不足以满足，但是综合条件1、2则有y+3=x+z.所以选c
57、我觉得选b，条件1负整数和正整数都有的无限数列，无法判断有无小于每个number的数，而条件二中，整数0满足
58、条件1不知w的大小，条件2单独也不能找出最大的，但是，综合1，2，x占25%，其余占75%，又有y25%,所以，w is the greatest作者: northying 时间: 2003-7-15 12:15
57.C
(integer and positive) is necessary, e.g.: 0.0001<0.001作者: fengqiwu 时间: 2003-7-15 18:21
3x作者: fernandochang 时间: 2003-7-16 22:29
第57题可否详细解释? 依然不懂!
欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/)
