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In a class, there are 80 students who study both Computer Science and Electronics. While 100 students study Computer Science, 120 students study Electronics. How many of them study Computer Science only?
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- 100
- 40
- 180
- 20
Correct Option: D
According to above given question , we can say that
There are 100 students in Computer Science which include students of electronics too.
Numbers of students who study both Computer Science and Electronics = 80
∴ Number of students opting for Computer Science only = 100 – 80 = 20
Therefore , 20 students study Computer Science only .
