Q. 133.9( 45 Votes )

In a survey of 60

Answer :

Let us assume U be the set of all students who took part in the survey


Let T be the set of students taking tea


And, let C be the set of the students taking coffee


Total number of students in a school, n (U) = 600


Number of students taking tea, n (T) = 150


Number of students taking coffee, n (C) = 225


Also,


Now, we have to find that number of students taking neither coffee nor tea i.e.



=


=


= 600 – [150 + 225 – 100]


= 600 – 275


= 325


Number of students taking neither coffee nor tea = 325 students


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