A survey was conducted on a sample of 1000 persons with reference to their knowledge of English, French and German. The results of the survey are presented in the given Venn diagram. The ratio of the number of persons who do not know any of the three lang

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Q: 148 (IAS/1997)
A survey was conducted on a sample of 1000 persons with reference to their knowledge of English, French and German. The results of the survey are presented in the given Venn diagram. The ratio of the number of persons who do not know any of the three languages to those who know all the three languages is

question_subject: 

Logic/Reasoning

question_exam: 

IAS

stats: 

0,6,6,0,6,1,5

keywords: 

{'venn diagram': [0, 1, 1, 1], 'languages': [0, 0, 1, 1], 'english': [1, 0, 0, 0], 'knowledge': [1, 1, 2, 4], 'german': [2, 1, 0, 1], 'survey': [1, 1, 2, 4], 'number': [0, 0, 0, 2], 'persons': [4, 4, 9, 10]}

The question is asking us to compare the number of people who don`t know any of the three languages discussed, to the number of people who know all three.

Option 1 suggests that the ratio of people who don`t know any language to those who know all three is 1 to 27. Option 2 suggests a ratio of 1 to 25. Option 3 suggests a very disproportionate ratio of 1 to 550. Option 4 suggests a ratio of 175 to 1000, where 175 represent people who don`t know any language and 1000 represents people who know all three languages.

The correct answer is option 2, indicating that for every 25 people who know all three languages, there is one person who does not know any of the languages. It`s important to keep in mind that these ratios are determined by the data shown in the Venn diagram that was supplied with the survey data.