Asked by Sabah

In a survey of 200 students of a school, it was found that 60% study mathematics, 45% study
physics, 35% study chemistry, 20% study mathematics and physics, 15% study physics and
chemistry, 25% study chemistry and mathematics and 10% none of these subjects. Find the
number of students who study all the three subjects using Venn diagrams only.

Answers

Answered by Steve
so, did you draw your diagram? Just start filling in the spaces.
Answered by yuvraj
answer => 40
200=120+90+70-40-30-50+X
=> X=200-160 = 40
Answered by sachin
Answer is 20 because 10% means 20 student are those which are not studying any subject.
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