The histogram below represent the marks of students in a Maths exam with passing marks as 30. For finding the number of students who have failed, we need to consider the class intervals -

15 - 30, 30 - 45 and 45 - 60

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0 - 15 and 15 - 30

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0 - 15, 15 - 30 and 30 - 45

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All the intervals are to be considered

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Solution

The correct option is B
0 - 15 and 15 - 30

If the pass mark is 30, the students who have scored less than 30 marks are considered as failed. So, to find the number of students with less than 30 marks, the class intervals 0 - 15 and 15 - 30 are considered.

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The histogram below represent the marks of students in a Maths exam with passing marks as 30. For finding the number of students who have failed, we need to consider the class intervals -

The correct option is B 0 - 15 and 15 - 30 If the pass mark is 30, the students who have scored less than 30 marks are considered as failed. So, to find the number of students with less than 30 marks, the class intervals 0 - 15 and 15 - 30 are considered.

The correct option is B
0 - 15 and 15 - 30

If the pass mark is 30, the students who have scored less than 30 marks are considered as failed. So, to find the number of students with less than 30 marks, the class intervals 0 - 15 and 15 - 30 are considered.