25
For the above distribution, the modal class is :
Marks : Below $10$ Below $20$ Below $30$ Below $40$ Below $50$
Number of Students : $3$ $12$ $27$ $57$ $75$
Marks : Below $10$ Below $20$ Below $30$ Below $40$ Below $50$
Number of Students : $3$ $12$ $27$ $57$ $75$
- (a)$10-20$
- (b)$20-30$
- (c)$30-40$
- (d)$40-50$
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(C) $30 - 40$