There are 68 students of 9th standard fr...

There are 68 students of 9th standard from Model High School, Nandpur. They have scored the following marks out of 80, in the written examination of mathematics.

Prepare a frequency distribution table (less than type) taking classes 30-40, 40-50, .
Using the table, answer the following questions
How many students scored less than 40 marks?

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