प्रकाश | CLASS 7 - विज्ञान | 4 PM Class by Nishtha ma'am | L5 | Hindi Medium

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

Acids,Bases and pH - Class 10 Science | 7 PM Master Class By Vipin Sir

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 .

There are five classes class 1, class 2, class 3, class 4 and class 5 in a school. They are one above the other. Class 1 is at the bottom, then class 2 above it and so on. Five videos M1, M2, M3, M4 and M5 are displayed in these given classes. Only one video is displayed in a particular class. Each video is displayed only one time. Video M5 is displayed at a even numbered class. Video M2 is displayed at class 1. Video M1 is displayed at the class just below M5. Video M4 is not displayed at even numbered class. Which of the following statement is not correct?