Mental Ability MCQs

Quantitative Aptitude - Set Theory Questions with solutions MCQs

1. In a class of 40 students, 20 have chosen Mathematics, 15 have chosen Mathematics but not Biology. If every student has chosen either Mathematics or Biology or both, find the number of students who chose both Mathematics and Biology.

A

5

B

7

C

6

D

4

Quantitative Aptitude - Set Theory Panchayat Secretary 2025
Correct Answer : A
Explanation :

Total in Mathematics = 20. Mathematics only = 15. So both = 20 - 15 = 5.

Correct Answered :

Wrong Answered :

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