Question:
In a survey of political preferences, 78% of those asked were in favour of at least one of the proposals I, II and III. If 50% favoured the first proposal, 30% the second and 20% the third, 5% favoured all the three, what is the percentage of those asked favoured more than one of the three proposals?
In a survey of political preferences, 78% of those asked were in favour of at least one of the proposals I, II and III. If 50% favoured the first proposal, 30% the second and 20% the third, 5% favoured all the three, what is the percentage of those asked favoured more than one of the three proposals?
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Use the principle of inclusion and exclusion to handle problems involving multiple conditions or categories.
Updated On: Aug 5, 2025
- 10
- 12
- 17
- 22
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The Correct Option is C
Solution and Explanation
Using the principle of inclusion and exclusion, we can calculate the percentage of people who favoured more than one proposal. By using the given percentages, we find that 17% of those asked favoured more than one of the proposals.
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