In a monthly test, 10 students were awarded marks in a Mathematics examination as follows:
23, 25, 15, 20, 17, 10, 24, 15, 19
If a student is selected at random, what is the probability that he gets more than 18 marks?

Marks obtained by 2500 students are shown in the following table: A student is selected at random. Find the probability that : he scores more than 80% marks.

The given table shows the marks obtained by 80 students in a class test with maximum marks 100 .A student of the class is selected at random.Find the probability that he gets less than 15% marks.

The percentages of marks obtained by a student in six unit tests are given below : A unit test is selected at random . What is the probability that the student gets more than 60% marks in the test ?

Marks obtained by 2500 students are shown in the following table: A student is selected at random. Find the probability that : he scores less than 60% marks.

The given table shows the marks obtained by 80 students in a class test with maximum marks 100. A student of the class is selected at random. Find the probability that he/she gets less than 15% marks.

The table given below shows the marks obtained by 80 students of a class in a test with maximum marks 100 . A student of the class is selected at random . Find the probability that he gets (i) less than 15% marks , (ii) 60 or more marks and (iii) less than 45 marks .

The percentage of marks obtained by 10 students in the monthly unit tests are given below: Based on this data, a student is selected at random. Find the probability that the selected student obtains more than 70% marks in a unit test.

The table given below shows the marks obtained by 50 students of a class in a test with maximum 2. marks 100. A student of the class is selected at random. Find the probability that the selected student gets less than 15% marks

The marks obtained by 90 students of a school in mathematics out of 100 are given as under : From these students , a student is chosen at random . What is the probability that the chosen student (i) gets 20% or less marks ? (ii) gets 60% or more marks ?