Question

In a group of 72 students, 47 have background is electronics, 59 have background in Mathematics & 42 have background in both the subjects. How many subjects do not have background in any of the subjects?

Answer 1

Answer:

$\huge\fcolorbox{white}{red}{Hello Mate}$

If 11 people are taking both courses, this means 51-11 or 40 are taking kickboxing only and 25-11 or 14 are taking yoga only. The number of people taking at least one course, therefore, is 40 + 14 + 11 = 65. The 83 members minus the 65 that are taking courses leaves 18 who are not taking any courses.

Answer 2

Answer:

8

Step-by-step explanation:

Students whose background is electronics = 47

Students whose background is mathematics = 59

Students whose background is both electronics & mathematics = 42

Total no. of students = 72

So, the no. of students do not have background in any of the subjects --->

=> 72 - 47 - 59 + 42 = 114 - 106 = 8