the following histogram depicts the marks obtained by 45 students. answer the following questions. 1) How many students obtained 30 or more marks but less than 40. 2) what is the interval of the highest marks and how many students are in this interval. 3) if passing marks are 30, what is the no of failures.
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1 = 3 students
2= 20-30 ; 10 students
3= 19 students
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