Question

28. From the given table
Marks
0 - 20
20-30
30-40
40-50
50-60 | 60-70
70-
above
8
7
10
10
20
20
15
No of
students
(a) Find the probability that a student obtained less than 20% in the
mathematics test.
(b) Find the probability that a student obtained marks 60 or above.​

Answer 1

Answer:

try it yourself it is very easy