CBSE Class 9 Maths: Case Study Questions of Chapter 15 Probability for Term 2 PDF

Case study Questions on Class 9 Mathematics Chapter 15 are very important to solve for your exam. Class 9 Maths Chapter 15 Case Study Questions have been prepared for the latest exam pattern. You can check your knowledge by solving case study-based questions for Class 9 Maths Chapter 15 Probability

Probability Case Study Questions With answers

Case Study/Passage Based Questions

A jeweler has different types of bracelets in his shop. Sunita wants to purchase a bracelet for her sister’s birthday gift. When Sunita goes to shop, she founds the following data which represents the number of bracelets of different types in the shop.

Find the probability that Sunita chooses Chain Bracelet.
(a) 23/180 (b) 37/180
(c) 37/90 (d) 23/90

Answer: (b) 37/180


Find the probability that she chooses Pearl bracelet.
(a) 23/180 (b) 37/180 (c) 37/90 (d) 23/90

Answer: (d) 23/90


What is the probability of a sure event?
(a) 1 (b) 0 (c) 1/2 (d) 2/3

Answer: (a) 1


What is the probability that she chooses neither Bangle bracelet nor Pearl bracelet?
(a) 23/180 (b) 45/180 (c) 109/180 (d) 23/45

Answer: (c) 109/180


What is the probability that Sunita purchased a Cuff bracelet?
(a) 6/17(b)2/13 (c) 1 (d) 2/15

Answer: (d) 2/15


Case Study/Passage Based Questions

In a factory, the workers are paid on daily basis. The new manager wants to know the salary slab of the workers and finds the data as given below.

Now, if a worker is chosen at random, then :

The probability that the worker is getting at most ₹ 500 is
(a) 3/80 (b) 9/80 (c) 1/80 (d) 4/25

Answer: (b) 9/80


The probability that the worker is getting at least ₹ 701 is
(a) 23/80 (b) 43/80 (c) 41/80 (d) 61/80

Answer: (b) 43/80


Probability that the worker is getting at most ₹ 900 is
(a)7/40 (b) 3/31 (c) 31/40 (d) 4/31

Answer: (c) 31/40


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