RS Aggarwal Solutions Class 9 Chapter 15 Probability Solution

EXERCISE 15A

Question 1:

Question 2:

https://www.youtube.com/watch?v=5SwdIrhmCoE

Question 3:

Question 4:

Question 5:

Question 6:
Number of tests in which he gets more than 60% marks =2
Total numbers of tests =6
∴ Required probability

Question 7:

Question 8:

Question 9:

Question 10:
Total numbers of students =30
Numbers of students who lie in the interval21-30=6
∴ Required probability

Question 11: