soodia wrote:
thingocanhnguyen wrote:
Please kindly imagine that. There are 4 types in the test:
- America + Blazer
- America + Sweater
- Europe + Blazer
- Europe + Sweater
1/ The proportion of student either an America or wearing blazer is 5/6 => It means that 5/6 of the number of students covers the students who are America and blazer => Only Europe + Sweater left => Proportion of Europe + Sweater = 1-5/6=1/6
=> cannot answer the question => insuff
2/ The proportion of
Europe or wearing sweater- America + Blazer
- America + Sweater
- Europe + Blazer
- Europe + Sweater
1/ The proportion of student either an America or wearing blazer is 5/6 => It means that 5/6 of the number of students covers the students who are America and blazer => Only Europe + Sweater left => Proportion of Europe + Sweater = 1-5/6=1/6
=> cannot answer the question => insuff
2/ The proportion of
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