Question

At a management institute (where students can choose more than one subject), out of 300 students, 55 did not choose any of marketing, finance or systems, 110 chose marketing, 130 chose finance and 140 chose systems. 45 chose marketing and finance, 50 chose marketing and systems and 60 chose finance and systems. The number of people choosing exactly one subject is

Answer 1

Answer:

70

Step-by-step explanation:

Total No of students - 300

Students who didn't choose any course - 55.

110 chose marketing.

130 chose finance.

140 chose systems.

45 chose marketing and finance.

50 chose marketing and systems.

60 chose finance and systems.

No of students who took atleast 1 course = 300 - 55 = 245.

No of students who took only marketing = total No of marketing students - No of students who took Marketimg and finance - No of students who took Marketimg and system = 110 - 45 - 50 = 15.

Similarly,

No of students who took only finance = 130 - 45 - 60 = 25.

No of students who took only system = 140 - 50 - 60 = 30.

The total No of students who took only 1 course = 15 + 25 + 30 = 70.