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The bar graph indicating the marks obtained out of $50$ in mathematics paper by $100$ students.

What is the number of students getting marks between $9$ and $40$ ?

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answer is D.

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Detailed Solution

Given the data of marks obtained by

100

students.

Let’s prepare a chart of

100

students using the data from the graph.
Question Image

Students with marks between

9

and

40

belong to the groups of

10 − 19, 20 − 29, 30 − 39

marks.
From the table above, number of students getting marks between

9

and

40

is given by,

= 12 + 20 + 24 = 56

The number of students getting marks between 9 and 40 is 56.
Hence, option 4) is correct.

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