CAT Quantitative Ability Questions | CAT Set Theory questions
CAT/1997
Question . 23
A survey of 200 people in a community who watched at least one of the three channels — BBC, CNN and DD — showed that 80% of the people watched DD, 22% watched BBC, and 15% watched CNN.
Referring to the previous question, how many per cent of the people watched all the three channels?
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Explanatory Answer
Method of solving this CAT Quantitative Ability Question from Set Theory question
(d) From the previous question data, we can’t determine how many people watched all the three channels. The data are insufficient