The class marks of a frequency distribution are given as follows : 15, 20, 25, … The class corresponding to the class mark 20 is : (A) 12.5 – 17.5 (B) 17.5 – 22.5 (C) 18.5 – 21.5 (D) 19.5 – 20.5
06/11/2024
Mathematics
9th