यदि (70) में से (45) विद्यार्थी हिंदी, (40) अंग्रेजी और (30) दोनों पढ़ते हैं, तो कम से कम एक भाषा पढ़ने वाले कितने हैं?
If out of (70) students, (45) study Hindi, (40) study English and (30) study both, then how many study at least one language?
Explanation opens after your attempt
A. (55)
Concept
At least one is (45+40-30=55). The intersection is subtracted to avoid double counting.
Why this answer is correct
The correct answer is A. (55). At least one is (45+40-30=55). The intersection is subtracted to avoid double counting.
Exam Tip
कम से कम एक (45+40-30=55) है। प्रतिच्छेद को दो बार गिनने से बचने के लिए घटाते हैं।
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