Correct option is D
Given:
Marks: 51, 29, 85, 40
Frequencies: 3, 4, 6, 7
Concept Used:
Mode is the highest frequency of the class.
Solution:
From the given data:
Marks 51 occur 3 times
Marks 29 occur 4 times
Marks 85 occur 6 times
Marks 40 occur 7 times
The highest frequency is 7, which corresponds to marks 40.
Thus, the mode is 40
