Logical Calculation

Assuming the question is to find the number of students who scored between 30 and 40 marks in aggregate, here is the correct calculation:

1. 
   Extract the Relevant Data from the Table:
   

   We need the cumulative counts for the boundaries of our range from the "Aggregate" row.

   
   
   
   
   • Number of students with "30 and above" marks = 27.
   
   
   • Number of students with "40 and above" marks = 7.
   
   
   
   


2. 
   Calculate the Number of Students in the Range:
   

   To find the number of students who scored 30 or more but less than 40, we subtract the count of the upper bound from the count of the lower bound.

   
   (Students with 30+) - (Students with 40+)


27 - 7 = 20
   

Final Answer: The number of students scoring between 30 and 40 marks in aggregate is 20.