गुरुत्वाकर्षण | CLASS 9 - विज्ञान | 4 PM Class by Ruchi Katiyaar Ma'am | L5 | Hindi Medium

Class 11 के बाद क्या ? Class 12 Hindi Medium की पढ़ाई साल के शुरू से कैसे करें ?

The probability that a student selected at random from a class will pass in Hindi is 4/5 and the probability that he passes in Hindi and English is 1/2 . What is the probability that he will pass in English if it is known that he has passed in Hindi ?

The ratio of the number of students of three class is 2:3:5 .If 20 students are added in each class then the ratio becomes 4:5:7 .Find the number of student in each class before adding .

12 PM Special Class | Class 11 - STRUCTURE OF ATOM || BOHR MODEL By Yakshu Ma'am