Ques. In a competitive examination, 250 students have registered. Out of these, 50 students have registered for Physics, 75 students for Mathematics and 35 students for both Mathematics and Physics. What is the number of students who have registered neither for Physics nor for Mathematics ?
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Answer:
answer is 90
out of 250
50 for physics
75 for maths
35 for maths and physics then add all
then it is 160
so, 250-160
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