22
For the following distribution :
Marks Below
10
20
30
40
50
60
Number of Students
3
12
27
57
75
80
The modal class is :
Marks Below
10
20
30
40
50
60
Number of Students
3
12
27
57
75
80
The modal class is :

- (a)$10-20$
- (b)$20-30$
- (c)$30-40$
- (d)$50-60$
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(c) $30-40$