Question

27) Following table shows the marks scored by a group of 90 students in a mathematics test
of 100 marks.
Marks
0-20 20-30 30-40 40-50 50-60 60-70 70-100
No. Of students 7
10
19
20
10
15
9
Find the probability that a student obtained
i) less than 20 marks
ii) 60 or more Mark's​

Answer 1

Answer:

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Step-by-step explanation:

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