Question

Class 11 PCMB
Chapter:- Sets (Maths)

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
numbers 1 and 2; 8 students attempted both question numbers 2 and 3 ; 26 students
attempted both question numbers 1 and 3; and 2 students attempted all the three questions.

Find how many attempted question number 1 but not 2 and 3.

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Answer 1

Step-by-step explanation:

total number of students which attempt all three questions=153

total number of students which attempt more than one question=64

so,

153-64=89

therefore

89students which attempt questions no 1only

Answer 2

Answer:

89 students.hope it helps