Force and Laws of Motion Class 9 One-Shot Lecture + Quiz | Class 9 Science 2021 | Triumph Series

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Introduction OF class-9th foundation course

If the lower boundary of the class is 25 and the size of the class is 9 , then the upper boundary of the same class "_______" .

Average marks obtained by 9 students in one row of a class is 45. One student with 35 marks exchanges his seat with a student securing 48 marks. What is the average marks of these 9 students of this row?