Question

A survey on course selection in one semester was done on 120 commerce students at Northwestern University and the findings were recorded as follows: 38 of the students did INS 111 36 did ENG 111 100 did Maths 111 26 did INS 111 and ENG 111 22 did ENG 111 and Maths 111 26 did INS 111 and Maths111 18 did all the three courses Determine the number of students that did the following a) none of the three courses b) only Maths 111 C) INS 111 and ENG 111 and not maths 111 d) only one course e) only two courses.

Answer 1

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solution. We have Engill maths il 6 70 18 8. 8 6 INSI hen the Venn diagram, of students who did none of the courses = 0 a) No . .b ) Maths Ill = 70 Only C) INS 111 and Ill but not maths Ill= 8 ang One course 76 + 6 +6 = 82 d) only only the courses 4+8+8 = 20

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