| Marks obtained | 0-10 | 10-20 | 30-30 | 30-40 | 40-50 |
| Number of students | 6 | 10 | 12 | 32 | 20 |
Answer:
Since the maximum frequency is 32 and it corresponds to
the class 30-40, therefore modal class is 30-40.
Hence, 
We know that the Mode 
is given
by
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