Question Detail
Question
In a class of 100 students, 40 offer Math, 45 Biology, 35 Physics. 15 offer Math & Biology, 10 Biology & Physics, 12 Math & Physics. 5 offer none. How many offer all three?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Union = 100 − 5 = 95. So 40+45+35 − (15+10+12) + x = 95 → 120 − 37 + x = 95 → 83 + x = 95 → x = 12.
Hint
No hint available