यदि (60%) विद्यार्थी (A), (50%) विद्यार्थी (B), और (25%) विद्यार्थी दोनों में हैं, तो ठीक एक में कितने प्रतिशत विद्यार्थी हैं?
If (60%) students are in (A), (50%) in (B), and (25%) in both, what percentage of students are in exactly one?
Explanation opens after your attempt
A. (60%)
Concept
Exactly one is ((60%-25%)+(50%-25%)=60%). The common part is not included in exactly one.
Why this answer is correct
The correct answer is A. (60%). Exactly one is ((60%-25%)+(50%-25%)=60%). The common part is not included in exactly one.
Exam Tip
ठीक एक (=(60%-25%)+(50%-25%)=60%) है। ठीक एक में साझा भाग नहीं लिया जाता।
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