Frequency

Durga prasad (Student CA CPT ) (116 Points)

07 June 2013  
plz explain
 
Data given below refers to marks gained by a
group of students
Class
Below
10
Below
20
Below
30
Below
40
Below
50
C.F 15 38 65 84 100
Find the no of students getting more than 30
marks.
a) 50 b) 53 c) 35 d) 52