How to solve XAT 2017 Question 55?

This question can be solved by applying the core concept explained in the solution above, followed by step-by-step calculation and elimination of options.

Which concept is tested in this question?

This question tests fundamental concepts commonly asked in XAT exams.

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XAT 2017 Question 55

This is a detailed step-by-step solution for XAT 2017 Question 55. Understand the concept, common mistakes, and expert tips to solve similar questions in XAT exam.

XAT

Let us note down the information given:
No person can major in all 3 subjects. 6 students major in both Mathematics and Physics, 15 major in both Physics and Biology, but no one majors in both Mathematics and Biology. There are 60 students in total.

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