सूक्ष्मदर्शी | किरण प्रकाशिकी और प्रकाशिक यंत्र | 12th Physics | Chapter 9 | Lec 7 | By Gopal Sir

Class 12th Physics | Easy & Hard Most Important Chapters

Class 12 Physics | Chapter 7 Alternating Current | Important Questions and Quick Revision Part-1

Class 12 Physics | Chapter 7 Alternating Current | Important Questions and Quick Revision Part-1

Class 12 Physics | Chapter 7 Alternating Current | Important Questions and Quick Revision Part-2

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 1

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 2

Class 12 Physics | Chapter 9 Ray Optics and Optical Instruments | Important Questions & Quick Revision | Part 3

In a class of 55 students, the number of students studying different subjects are 23 in Mathematics, 24 in Physics, 19 in Chemistry, 12 in Mathematics and Physics, 9 in Mathematics and Chemistry, 7 in Physics and Chemistry and 4 in all the three subjects. Find the number of students who have taken exactly one subject.