In a class of 78 students 14 are taking French , 22 are taking German . Of the students taking French or German , 9 are taking both courses. How many students are not enrolled in either course?

In a class of 78 students 14 are taking French , 22 are taking German . Of the students taking French or German , 9 are taking both courses. How many students are not enrolled in either course? Correct Answer 24

আমরা জানি, N(T) = N(A) + N(B) - N(A n B) + None None = N(T) - N (A) - N(B) + N( A n B) = 78 - 41 - 22 + 9 = 24
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