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Doctors Medicines MCQs Q&A

  1. 100
  2. 200
  3. 300
  4. 400
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1 Answers

Option 1 : 100

Given

Total number of students = 500

Formula used

n(A ᴗ B) = n(A) + n(B) - n(A ᴖ B)

calculation

let the number of students who study b.com course is A and the number of students who study B.Sc course is B.

So, n(A ᴗ B) = 500, n(A) = 200, n(B) = 400, n (A ᴖ B) =?

500 = 200 + 400 - n(A ᴖ B)

500 - 600 = - n(A ᴖ B)

n(A ᴖ B) = 100

There are 100 students who study both the courses together.

Alternate Method[ alt="F6 Madhuri SSC 30.03.2022 D2" src="//storage.googleapis.com/tb-img/production/22/03/F6_Madhuri_SSC_30.03.2022_D2.png" style="width: 256px; height: 229px;">

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