8. Marks obtained by 50 tudents in a class test of 100 marks are given below:
Marks
0-25
25 - 50
50 - 75
75 - 100
No of students 4
12
18
16
Find the probability that a student obtained less than 50% marks
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Marks obtained by 50 tudents in a class test of 100 marks are given below:
Marks
0-25
25 - 50
50 - 75
75 - 100
No of students 4
12
18
16
Find the probability that a student obtained less than 50% marks
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