Question Detail
Question
In a class of 56 students, 39 study Math and 30 Chemistry. If 5 study neither, how many study Chemistry but not Math?
Correct Answer
Option A is the correct answer.
Detailed Explanation
Total studying at least one = 56-5=51. Intersection = 39+30-51=18. Chemistry only = 30-18=12.
Hint
Find intersection first using n(M∪C)=n(M)+n(C)-n(M∩C)