2019年SAT考试数学高频练习题及答案讲解5

>>SAT考试数学：2019年SAT考试数学高频练习题及答案讲解5

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5. In a class of 78 students 41 are taking French, 22 are taking German and 9 students are taking both French and German. How many students are not enrolled in either course?

A. 6

B. 15

C. 24

D. 33

E. 54

5.Correct Answer: C

Explanation:

You could solve this by drawing a Venn diagram. A simpler way is to realize that you can subtract the number of students taking both languages from the numbers taking French to find the number taking only French. Likewise find those taking only German. Then we have:Total = only French + only German + both + neither

78 = (41-9) + (22-9) + 9 + neither.

Not enrolled students = 24

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