# Assignments For Class 9 Mathematics Probability

Assignments for Class 9 Mathematics Probability have been developed for Standard 9 students based on the latest syllabus and textbooks applicable in CBSE, NCERT and KVS schools. Parents and students can download the full collection of class assignments for class 9 Mathematics Probability from our website as we have provided all topic wise assignments free in PDF format which can be downloaded easily. Students are recommended to do these assignments daily by taking printouts and going through the questions and answers for Grade 9 Mathematics Probability. You should try to do these test assignments on a daily basis so that you are able to understand the concepts and details of each chapter in your Mathematics Probability book and get good marks in class 9 exams.

#### Key Concepts for Class 9 Mathematics Probability

(1) Experiment – A job which produces some outcomes.
(2) Trial – Performing an experiment.
(3) Event – The group of outcomes, denoted by capital letter of English alphabets like A, B, E etc.
(4) The empirical (or experimental) probability P(E) of an event E is given by P(E) = number of trials in which E has happend/total no of trials
(5) The probability of an event lies between 0 and 1 (0 and 1 are included)
(6) Impossible event: Event which never happen.
(7) Certain event – event which definitely happen

#### Class 9 Mathematics Probability Important Questions and Answers

Question. A coin is tossed 1000 times with the following frequencies.
compute the probability for each event.

Ans.

0.455, 0.545

Question. Three coins tossed simultaneously 100 times with the following frequencies of different outcomes.
Frequency         14                 38             36              12
If the coin tossed again then find the probability.
(iii) getting more tails than heads
(iv) at least one head coming up

Ans.

(i) 0.36 (ii) 0.12 (iii) 0.52 (iv) 0.86

Question. In a cricket match, a batsman hits a boundary 6 times out of 30 balls plays. Find the probability that on a ball played.
(i) He hits boundary
(ii) He does not ht a boundary.

Ans.

(i) 0.2 (ii) 0.8

Question. The percentage of marks obtained by a student in the monthly unit tests are given as :

Ans.

0.4

Question. In a football match, a player makes 4 goals from 10 kicks. The probability of a goal is from 10 kicks is.

Ans.

4/10

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

Ans.

4/5

Question. The following table gives the life of 400 lamps.

A bulb is selected at random find the probability that the life time of the selected bulb is:
(i) less than 400
(ii) between 300 to 800 hours.
(iii) at least 700 hours.

Ans.

(i) 7/200   (ii) 29/40   (iii) 23/59

Question. Following table shows the marks scored by a group of 90 students in a mathematics test of 100 marks.

Find the probability that a student obtained
(i) less than 20% marks
(ii) 60 or more marks

Ans.

7/90      23/90

Question. Which is not a probability of an event?
(a) 2
(b) 2/5
(c) .001
(d) .25

Ans.

A

Question. 1000 families with 2 children were selected randomly, and the following data were recorded.

If a family chosen at random, find the prob. that it has
(a) No boys
(b) One boy
(c) Two boys
(d) at least one boy
(e) at most two boy.

Ans.

(a) 0.14 (b) 0.56 (c) 0.30 (d) 0.86 (e) 0.7

Question. A die is thrown 1000 times with following frequency of out comes 1, 2, 3, 4, 5 and 6 as given below

Find the probability of each out come.

Ans.

(i) .179 (ii) .15 (iii) .157 (iv) .149 (v) .175 (vi) .19

Question. The record of a weather station shows that out of the past 250 consecutive days, its weather forecast correct 175 times. What is the probability that on a given day.
(i) it was correct.
(ii) it was not correct.

Ans.

(i) 0.7 (ii) 0.3

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

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

Ans.

½

## Assignments for Class 9 Mathematics Probability as per CBSE NCERT pattern

All students studying in Grade 9 Mathematics Probability should download the assignments provided here and use them for their daily routine practice. This will help them to get better grades in Mathematics Probability exam for standard 9. We have made sure that all topics given in your textbook for Mathematics Probability which is suggested in Class 9 have been covered ad we have made assignments and test papers for all topics which your teacher has been teaching in your class. All chapter wise assignments have been made by our teachers after full research of each important topic in the textbooks so that you have enough questions and their solutions to help them practice so that they are able to get full practice and understanding of all important topics. Our teachers at https://www.assignmentsbag.com have made sure that all test papers have been designed as per CBSE, NCERT and KVS syllabus and examination pattern. These question banks have been recommended in various schools and have supported many students to practice and further enhance their scores in school and have also assisted them to appear in other school level tests and examinations. Its easy to take print of thee assignments as all are available in PDF format.

Some advantages of Free Assignments for Class 9 Mathematics Probability

1. Solving Assignments for Mathematics Probability Class 9 helps to further enhance understanding of the topics given in your text book which will help you to get better marks
2. By solving one assignments given in your class by Mathematics Probability teacher for class 9 will help you to keep in touch with the topic thus reducing dependence on last minute studies
3. You will be able to understand the type of questions which are expected in your Mathematics Probability class test
4. You will be able to revise all topics given in the ebook for Class 9 Mathematics Probability as all questions have been provided in the question banks
5. NCERT Class 9 Mathematics Probability Workbooks will surely help you to make your concepts stronger and better than anyone else in your class.
6. Parents will be able to take print out of the assignments and give to their child easily.

All free Printable practice assignments are in PDF single lick download format and have been prepared by Class 9 Mathematics Probability teachers after full study of all topics which have been given in each chapter so that the students are able to take complete benefit from the worksheets. The Chapter wise question bank and revision assignments can be accessed free and anywhere. Go ahead and click on the links above to download free CBSE Class 9 Mathematics Probability Assignments PDF.

Where can I download free Assignments for Class 9 Mathematics Probability ?

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I want free printable assignments with questions and answers for Mathematics Probability for Standard 9, where can I get them ?

You can get free PDF downloadable assignments for Grade 9 Mathematics Probability from our website which has been developed by teachers after doing extensive research in each topic.

Can I get assignments and question banks for other subjects in Class 9 ?

On our website we have provided assignments for all subjects in Grade 9, all topic wise test sheets have been provided in a logical manner so that you can scroll through the topics and download the worksheet that you want.

I want practice assignments for all topics in my Class 9 Mathematics Probability Textbook, where can I get it ?

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