来自倪国强的问题
【GMAT里一题数学题题目读不懂,GMATOG12第21页第6题:200个调查家庭里,80个不用A也不用B,60个只用A,andforeveryhouseholdthatusedbothbrandsofsoap,3usedonlyBrandBsoap.这句怎么理解?】
GMAT里一题数学题题目读不懂,
GMATOG12第21页第6题:200个调查家庭里,80个不用A也不用B,60个只用A,andforeveryhouseholdthatusedbothbrandsofsoap,3usedonlyBrandBsoap.这句怎么理解?
1回答
2020-06-13 23:48