In an examination, question number 1 was attempted by 67 students, question number 2 by 46 students and question number 3 by 40 students. 28 students attempted both question number 1 and 2, 8 attempted both question number 2 and 3, 26 attempted both question number 1 and 3 and 2 students attempted all the three questions. Find how many attempted question number 1 but not question number 2 and 3?

Asked by mesamit | 30th Jul, 2010, 09:50: AM

Expert Answer:

Dear Student,
 
 
Here, total number of students who attempted question 1 = 67
So, from the diagram
x + 28 + 2 + 23 = 67
x + 53 = 67
 
x = 14 
 
 
 
Regards,
 
Team Topper Learning

Answered by  | 30th Jul, 2010, 04:38: PM

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