The number of students in the class, given those good at math, physics, both and none, would be 40 students.
How to find the number of students ?
To determine the total number of students in the class, you can use the principle of the Inclusion-Exclusion Principle, which accounts for students who are good at math, physics, both subjects, and neither subject.
M = 25 (students good at math).
P = 23 (students good at physics).
B = 14 (students good at both subjects).
N = 6 (students good at neither subject).
Use the Inclusion-Exclusion Principle:
Total Students = M + P - B + N
Total Students = 25 + 23 - 14 + 6
Total Students = 40
In conclusion, there are 40 students in the class.
The full question is:
A class has 25 students good at math, 23 students good at physics, 14 students good at both subjects and 6 students good at neither subject. Ask how many students there are in that class