Students
Probability
Level
1
Out of forty students, 14 are taking English Composition and 29 are taking Chemistry. If five students are in both classes, how many students are in neither class?
The answer is 2.
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Total students = 40
Going for English = 14
Going for Chem = 29
Going for both = 5
Thus, number of students going for at least 1 subject is = 14+29-5
That is 38.
Means, out of 40 fellows, 38 are going for at least 1 subject. Apparently, 2 students are not going for any 1 of the subjects.