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Monday 6 February 2017
Question of the day 4-2-2017
In a class of 78
students 41 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?
Formula for calculating two overlapping sets: A + B - both + NOT(A or B) = Total so in our task we have equation: 41 (french) + 22 (german) - 9 (both) + NOT = 78 54 + NOT = 78 NOT = 78 - 54 = 24
Answer: Option a
ReplyDeleteExplanation:
Formula for calculating two overlapping sets:
A + B - both + NOT(A or B) = Total
so in our task we have equation:
41 (french) + 22 (german) - 9 (both) + NOT = 78
54 + NOT = 78
NOT = 78 - 54 = 24