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Question

In a survey of 400 students in a school, 100 are listed as taking apple juice, 150 as taking orange juice and 75 were listed as taking both apple as well as orange juice. Find how many students were taking "Neither apple nor orange juice"

A
175
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B
225
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C
275
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D
none of these
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Solution

The correct option is C 225
Thereare400students.So,n(s)=400.
100studentstakeapplejuice,n(A)=100
150takeorangejuice,n(o)=150
75studentstakebothappleabdorangejuice,n(Ao)=75
So,n(Ao)=n(A)+n(o)n(Ao)
=100+15075
=175
Numberofstudentstakingneitherapplenororange
juice,n(¯¯¯¯¯¯¯¯¯¯¯¯¯Ao)=n(s)n(Ao)
=400175
=225

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