[Answer] Mrs. Garg recorded the marks obtained by her students in the following table. She calculated the modal marks of the students of the class as 45.

The Question : Mrs. Garg recorded the marks obtained by her students in the following table. She calculated the modal marks of the students of the class as 45. While printing the data, a blank was left. Find the missing frequency in the table given below

Marks Obtained	0 – 20	20 – 40	40 – 60	60 – 80	80 – 100
Number of Students	5	10	–	6	3

Solution for the question :
Solution:Modal class is 40 − 60, l = 40, h = 20, f1 =?, f0 = 10, f2 = 6

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