Direction: Study the following histogram of marks in mathematics (out of 50) of students in a class and answer the following questions.
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If the pass marks in maths is 31, the number of students who failed in maths is :
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- 10
- 15
- 20
- 25
Correct Option: B
As per the given question , we can say that If the pass marks in maths is 31, the number of students who failed in maths class-interval 25–30 = 15
Therefore , required answer is 15 .
