RD SHARMA Solutions for Class 9 Maths Chapter 25 - Probability

If you love numbers & have a deep interest in statistics, then Mathematics is probably one of the scoring subject ever. A Class 9th CBSE Mathematics is one of the challenging subject one can undergo as, it involves a lot of crunching of complex numbers, geometrical formulae, diagrams & much more. Hence, to simplify the mathematical complexity, TopperLearning has framed a customise solution that involves Test preparation notes, Textbook solutions, Videos, & several other study material that help the student to memorise the concepts quickly. We have bifurcated our CBSE Class 9 Study Material (Solution) into 3 Different parts namely: 

- CBSE Class 9 Practice Test includes Revision notes, Question bank & Sample Paper 
- TopperLearning Classroom that includes Videos, Ask the Experts & Preparation Tips
- Text Book Solutions, etc

TopperLearning packages involves all the ingredients of CBSE Class 9 Study Material that includes Solved Question Papers, High Animated Videos, Solutions by SME (Subject Matter Expert), CBSE class 9 Preparation Tips, Update to CBSE 9th Mathematics syllabus, Practice books, Reference Materials, etc that help you to score great marks with glorious marks.

Getting a good score is now relatively easy if you prefer TopperLearning solutions for CBSE Class 9th Mathematics subject. By purchasing our package, you will be accessed to guaranteed success in your examination!

Read  more
Page / Exercise

Chapter 25 - Probability Exercise 25.16

Question 1

The probability of an impossible event is

(a) 1

(b) 0

(c) less than 0

(d) greater than 1

Solution 1

The probability of an impossible event is always zero since the chances of occurring of that event is zero.

Hence, correct option is (b).

Question 2

The probability of a certain event is

(a) 0

(b) 1

(c) greater than 1

(d) less than 0

Solution 2

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 3

The probability an event of a trial is

(a) 1

(b) 0

(c) less than 1

(d) more than 1

Solution 3

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 4

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 4

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 5

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 5

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Chapter 25 - Probability Exercise 25.17

Question 1

A coin is tossed 1000 times, if the probability of getting a tail is 3/8, how many times head is obtained?

(a) 525

(b) 375

(c) 625

(d) 725

Solution 1

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 2

A dice is rolled 600 times and the occurrence of the outcomes 1, 2, 3, 4, 5 and 6 are given below:

Outcome 1 2 3 4 5 6
frequency 200 30 120 100 50 100

The probability of getting a prime number is

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 2

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 3

The percentage of attendance of different classes in a year in a school is given below:

Class: X IX VIII VII VI V
Attendance: 30 62 85 92 76 55

What is the probability that the class attendance is more than 75%?

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 3

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 4

A bag contains 50 coins and each coin is marked from 51 to 100. One coin is picked at random. The probability that the number on the coin is not a prime number, is

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 4

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 5

In a football match, Ronaldo makes 4 goals from 10 penalty kicks. The probability of converting a penalty kick into a goal by Ronaldo, is

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Solution 5

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Chapter 25 - Probability Exercise Ex. 25.1

Question 1
A coin is tossed 1000 times with the following frequencies:

Head : 455, Tail : 545

Compute the probability for each event.
Solution 1
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 2

Two coins are tossed simultaneously 500 times with the following frequencies of different outcomes:

Two heads : 95 times

One tail : 290 times

No head : 115 times

Find the probability of occurrence of each of these events.

Solution 2

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 3
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 3
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 4
1500 families with 2 children were selected randomly and the following data were recorded:

Number of girls in a family: 0 1 2
Number of families: 211 814 475


If a family is chosen at random, compute the probability that it has:

(i) No girl

(ii) 1 girl

(iii) 2 girls

(iv) at most one girl

(v) more girls than boys
Solution 4
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 5
In a cricket match, a batsman hits a boundary 6 times out of 30 balls he plays.

Find the probability that on a ball played:

(i) he hits boundary

(ii) he does not hit a boundary.
Solution 5
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 6
The percentage of marks obtained by a student in monthly unit tests are given below:

Units Test: I II III IV V
Percentage of marks obtained: 69 71 73 68 76


Find the probability that the student gets:

(i) More than 70% marks

(ii) less than 70% marks

(iii) a distinction.
Solution 6
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 7
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 7
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 8
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 8
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 9
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 9
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 10

 

Following table shows the birth month of 40 students of class IX.

Jan

Feb

March

April

May

June

July

Aug.

Sept.

Oct.

Nov.

Dec.

3

4

2

2

5

1

2

5

3

4

4

4

Find the probability that a student was born in August.

  

Solution 10

Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

Question 11
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 11
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 12
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 12
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 13
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 13
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Question 14
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability
Solution 14
Rd-sharma Solutions Cbse Class 9 Mathematics Chapter - Probability

CBSE Class 9 Maths Homework Help

Clear all your doubts instantly at our “Ask Doubt” section. Get expert help and guidance at your comfort. To know the syllabus in detail, click here.

 

NCERT Textbooks are the rich stimulant for those students who want to score better in the CBSE examinations. By solving our papers the students have achieved a better and higher result. One of the primary objectives of creating ncert solution for class 9  is that the student gets access to an easy solution; which acts as a strong catalyst in improving the marks. We usually focus that the students don’t find any difficulty in understanding the concepts and can memorize them easily.