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Question

The histogram below shows the marks obtained by students in Mathematics.

In class intervals ________________ and ________________ , the number of students are equal.


A

10-20 and 30-40

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B

30-40 and 60-70

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C

40-50 and 60-70

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D

30-40 and 50-60

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Solution

The correct option is B

30-40 and 60-70


We can observe in the graph that height of the histogram is the same for the class intervals 30-40 and 60-70. So, in these intervals, the number of students are the same i.e. 9.


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