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Quantitative Aptitude

Zonal Theorem

Referring to ...

Question

Referring to the previous question, what percentage of people watched all the three channels? (CAT 1997)

A

3.5%

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B

5%

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C

8.5%

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D

Cannot be determined

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Solution

The correct option is D Cannot be determined
By zonal theorem:

I+II+III=100%

But only II is known , hence option (d)

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