of a class is given. Study the histogram and answer the questions given below.
28.How many students got less than 10 marks?
29.How many students got more than 30, but less than 40 marks?
30.How many students got 50 or more marks?
31.If the minimum passing marks are 30, then how many students failed in the examination?
32.If the minimum passing marks are 30, then what is the percentage of passed students?
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