A School has a total of 90 students. There are 30 students taking Physics, 25 taking English, and 13 taking both. Approximately what percentage of the students is taking either Physics or English?
Solution
Correct Answer: Option C
আমরা জানি,
n(A∪B) = n(A) + n(B) - n(A∩B)
⇒ n(A∪B) = 30 + 25 - 13
⇒ n(A∪B) = 42
∴ নির্ণেয় ছাত্র-ছাত্রীর সংখ্যা শতকরা = (42/90) × 100% = 46.67% = 47% (প্রায়)
n(A∪B) = n(A) + n(B) - n(A∩B)
⇒ n(A∪B) = 30 + 25 - 13
⇒ n(A∪B) = 42
∴ নির্ণেয় ছাত্র-ছাত্রীর সংখ্যা শতকরা = (42/90) × 100% = 46.67% = 47% (প্রায়)
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