last year in a group of 30 businesses, 21 reported a net profit and 15 had investments in foreign markets. how many of the businesses did not report a net profit nor invest in foreign markets last year?
1.last year 12 of the 30 businesses reported a net profit and had investments in foreign markets.
2.last year 24 of the 30 businesses reported a net profit or invested in foreign markets or both
答案为什么是B 我认为是D作者: qujundi 时间: 2011-12-4 21:23
i think D too.作者: charles1992 时间: 2011-12-6 06:24
用文氏图很好解决，这题应该是选D，可能是GWD的答案错了吧~~
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