Question

The table given below shows the marks obtained by 80 students of a class in a

test with maximum marks 100.

Marks 0-15 15-30 30-45 45-60 60-75 Above 75

Number of Students 6 13 17 24 16 4

A student of the class is selected at random. Find the probability that he

gets

a) less than 15% marks

b) 60 or more marks
​

Answer 1

Answer:

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