Question

15. Following table shows the marks scored by a group of 90 students in a mathematics test of
100 marks
9০ জন ছাত্র ৰ i০০ নম্বৰৰ Mathematics Exam ৰ নম্বৰ
Maks
Number of students
0-20
8
20-30
9
30-40
40-50
18
50 – 60
19
60 - 80
16
80 - 100
8
Find the probability that a student obtained less than 60% marks​

Answer 1

Answer:

the probability for student obtained less than 60% is 60-80