Class 9 Exam > Class 9 Notes > Mathematics (Maths) Class 9 > RS Aggarwal MCQs: Probability
RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9 PDF Download
| Download, print and study this document offline |
Please wait while the PDF view is loading
Page 1
? ?
Q u e s t i o n : 1 9
In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen
at random, what is the probability that he / she has a high school certificate?
a
1
2
b
3
5
c
7
10
d
4
5
S o l u t i o n :
Total number of people surveyed = 645
Number of people who have a high school certificate = 516
? PPersonhasahighschoolcertificate
=
Number of people who have a high school certificate
Total number of people surveyed
=
516
645
=
4
5
Hence, the correct answer is option d
.
Q u e s t i o n : 2 0
In a medical examination of students of a class, the following blood groups are recorded:
Blood group A B AB O
Number of students 11 15 8 6
From this class, a student is chosen at random. What is the probability that the chosen student has blood group
AB?
a
Page 2
? ?
Q u e s t i o n : 1 9
In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen
at random, what is the probability that he / she has a high school certificate?
a
1
2
b
3
5
c
7
10
d
4
5
S o l u t i o n :
Total number of people surveyed = 645
Number of people who have a high school certificate = 516
? PPersonhasahighschoolcertificate
=
Number of people who have a high school certificate
Total number of people surveyed
=
516
645
=
4
5
Hence, the correct answer is option d
.
Q u e s t i o n : 2 0
In a medical examination of students of a class, the following blood groups are recorded:
Blood group A B AB O
Number of students 11 15 8 6
From this class, a student is chosen at random. What is the probability that the chosen student has blood group
AB?
a
b
c
d
S o l u t i o n :
c
Explanation:
Total number of students = 40
Number of students with blood group AB = 8
Let E be the event that the selected student's blood group is AB.
? Required probability = P(E) =
8
40
=
1
5
Q u e s t i o n : 2 1
80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.
Lifetime
inhours
300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that its life is 1150?
a
1
80
b
7
16
c
1
d
0
S o l u t i o n :
d
0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.
Q u e s t i o n : 2 2
In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected
at random, the probability that he / she does not like to eat potato chips is
13
20
3
8
1
5
11
40
1
5
= 0. 35
Page 3
? ?
Q u e s t i o n : 1 9
In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen
at random, what is the probability that he / she has a high school certificate?
a
1
2
b
3
5
c
7
10
d
4
5
S o l u t i o n :
Total number of people surveyed = 645
Number of people who have a high school certificate = 516
? PPersonhasahighschoolcertificate
=
Number of people who have a high school certificate
Total number of people surveyed
=
516
645
=
4
5
Hence, the correct answer is option d
.
Q u e s t i o n : 2 0
In a medical examination of students of a class, the following blood groups are recorded:
Blood group A B AB O
Number of students 11 15 8 6
From this class, a student is chosen at random. What is the probability that the chosen student has blood group
AB?
a
b
c
d
S o l u t i o n :
c
Explanation:
Total number of students = 40
Number of students with blood group AB = 8
Let E be the event that the selected student's blood group is AB.
? Required probability = P(E) =
8
40
=
1
5
Q u e s t i o n : 2 1
80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.
Lifetime
inhours
300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that its life is 1150?
a
1
80
b
7
16
c
1
d
0
S o l u t i o n :
d
0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.
Q u e s t i o n : 2 2
In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected
at random, the probability that he / she does not like to eat potato chips is
13
20
3
8
1
5
11
40
1
5
= 0. 35
a
1
4
b
1
2
c
3
4
d
4
5
S o l u t i o n :
Total number of children surveyed = 364
Number of children who liked to eat potato chips = 91
Number of children who do not liked to eat potato chips = 364 - 91 = 273
? PChilddoesnotliketoeatpotatochips
=
Number of children who do not liked to eat potato chips
Total number of children surveyed
=
273
364
=
3
4
Hence, the correct answer is option c
.
Q u e s t i o n : 2 3
Two coins are tossed 1000 times and the outcomes are recorded as given below:
Number of
heads
2 1 0
Frequency 200 550 250
Now, if two coins are tossed at random, what is the probability of getting at most one head?
a
3
4
b
4
5
c
1
4
d
1
5
S o l u t i o n :
Page 4
? ?
Q u e s t i o n : 1 9
In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen
at random, what is the probability that he / she has a high school certificate?
a
1
2
b
3
5
c
7
10
d
4
5
S o l u t i o n :
Total number of people surveyed = 645
Number of people who have a high school certificate = 516
? PPersonhasahighschoolcertificate
=
Number of people who have a high school certificate
Total number of people surveyed
=
516
645
=
4
5
Hence, the correct answer is option d
.
Q u e s t i o n : 2 0
In a medical examination of students of a class, the following blood groups are recorded:
Blood group A B AB O
Number of students 11 15 8 6
From this class, a student is chosen at random. What is the probability that the chosen student has blood group
AB?
a
b
c
d
S o l u t i o n :
c
Explanation:
Total number of students = 40
Number of students with blood group AB = 8
Let E be the event that the selected student's blood group is AB.
? Required probability = P(E) =
8
40
=
1
5
Q u e s t i o n : 2 1
80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.
Lifetime
inhours
300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that its life is 1150?
a
1
80
b
7
16
c
1
d
0
S o l u t i o n :
d
0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.
Q u e s t i o n : 2 2
In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected
at random, the probability that he / she does not like to eat potato chips is
13
20
3
8
1
5
11
40
1
5
= 0. 35
a
1
4
b
1
2
c
3
4
d
4
5
S o l u t i o n :
Total number of children surveyed = 364
Number of children who liked to eat potato chips = 91
Number of children who do not liked to eat potato chips = 364 - 91 = 273
? PChilddoesnotliketoeatpotatochips
=
Number of children who do not liked to eat potato chips
Total number of children surveyed
=
273
364
=
3
4
Hence, the correct answer is option c
.
Q u e s t i o n : 2 3
Two coins are tossed 1000 times and the outcomes are recorded as given below:
Number of
heads
2 1 0
Frequency 200 550 250
Now, if two coins are tossed at random, what is the probability of getting at most one head?
a
3
4
b
4
5
c
1
4
d
1
5
S o l u t i o n :
Total number of times two coins are tossed = 1000
Number of times of getting at most one head = Number of times of getting 0 heads + Number of times of getting 1
head = 250 + 550 = 800
? PGettingatmostonehead
=
Number of times of getting at most one head
Total number of times two coins are tossed
=
800
1000
=
4
5
Hence, the correct answer is option b
.
Q u e s t i o n : 2 4
80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under.
Lifetime inhours 300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that the selected bulb has a life more than 500
hours?
a
b
c
d
S o l u t i o n :
b
Explanation:
Total number of bulbs in the lot = 80
Number of bulbs with life time of more than 500 hours =
23 +25 +10 = 58
Let E be the event that the chosen bulb's life time is more than 500 hours.
? Required probability = P(E) =
58
80
=
29
40
Q u e s t i o n : 2 5
To know the opinion of the students about the subject Sanskrit, a survey of 200 students was conducted. The data
is recorded as under.
Opinion like dislike
27
40
29
40
5
16
11
40
29
40
Page 5
? ?
Q u e s t i o n : 1 9
In a sample survey of 645 people, it was found that 516 people have a high school certificate. If a person is chosen
at random, what is the probability that he / she has a high school certificate?
a
1
2
b
3
5
c
7
10
d
4
5
S o l u t i o n :
Total number of people surveyed = 645
Number of people who have a high school certificate = 516
? PPersonhasahighschoolcertificate
=
Number of people who have a high school certificate
Total number of people surveyed
=
516
645
=
4
5
Hence, the correct answer is option d
.
Q u e s t i o n : 2 0
In a medical examination of students of a class, the following blood groups are recorded:
Blood group A B AB O
Number of students 11 15 8 6
From this class, a student is chosen at random. What is the probability that the chosen student has blood group
AB?
a
b
c
d
S o l u t i o n :
c
Explanation:
Total number of students = 40
Number of students with blood group AB = 8
Let E be the event that the selected student's blood group is AB.
? Required probability = P(E) =
8
40
=
1
5
Q u e s t i o n : 2 1
80 bulbs are selected at random from a lot and their lifetime is hours is recorded as under.
Lifetime
inhours
300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that its life is 1150?
a
1
80
b
7
16
c
1
d
0
S o l u t i o n :
d
0
Maximum lifetime a bulb has is 1100 hours. There is no bulb with lifetime 1150 hours.
Q u e s t i o n : 2 2
In a survey of 364 children aged 19 – 36 months, it was found that 91 liked to eat potato chips. If a child is selected
at random, the probability that he / she does not like to eat potato chips is
13
20
3
8
1
5
11
40
1
5
= 0. 35
a
1
4
b
1
2
c
3
4
d
4
5
S o l u t i o n :
Total number of children surveyed = 364
Number of children who liked to eat potato chips = 91
Number of children who do not liked to eat potato chips = 364 - 91 = 273
? PChilddoesnotliketoeatpotatochips
=
Number of children who do not liked to eat potato chips
Total number of children surveyed
=
273
364
=
3
4
Hence, the correct answer is option c
.
Q u e s t i o n : 2 3
Two coins are tossed 1000 times and the outcomes are recorded as given below:
Number of
heads
2 1 0
Frequency 200 550 250
Now, if two coins are tossed at random, what is the probability of getting at most one head?
a
3
4
b
4
5
c
1
4
d
1
5
S o l u t i o n :
Total number of times two coins are tossed = 1000
Number of times of getting at most one head = Number of times of getting 0 heads + Number of times of getting 1
head = 250 + 550 = 800
? PGettingatmostonehead
=
Number of times of getting at most one head
Total number of times two coins are tossed
=
800
1000
=
4
5
Hence, the correct answer is option b
.
Q u e s t i o n : 2 4
80 bulbs are selected at random from a lot and their lifetime in hours is recorded as under.
Lifetime inhours 300 500 700 900 1100
Frequency 10 12 23 25 10
One bulb is selected at random from the lot. What is the probability that the selected bulb has a life more than 500
hours?
a
b
c
d
S o l u t i o n :
b
Explanation:
Total number of bulbs in the lot = 80
Number of bulbs with life time of more than 500 hours =
23 +25 +10 = 58
Let E be the event that the chosen bulb's life time is more than 500 hours.
? Required probability = P(E) =
58
80
=
29
40
Q u e s t i o n : 2 5
To know the opinion of the students about the subject Sanskrit, a survey of 200 students was conducted. The data
is recorded as under.
Opinion like dislike
27
40
29
40
5
16
11
40
29
40
Number of
students
135 65
What is the probability that a student chosen at random does not like it?
a
13
27
b
27
40
c
13
40
d
27
13
S o l u t i o n :
Total number of students surveyed = 200
Number of students who does not like the subject Sanskrit = 65
? PStudentchosenatrandomdoesnotlikethesubjectSanskrit
=
Number of students who does not like the subject Sanskrit
Total number of students surveyed
=
65
200
=
13
40
Hence, the correct answer is option c
.
Q u e s t i o n : 2 6
A coin is tossed 60 times and the tail appears 35 times. What is the probability of getting a head?
a
7
12
b
12
7
c
5
12
d
1
25
S o l u t i o n :
c
5
12
Read More
|
44 videos|412 docs|55 tests
|
Related Exams
About this Document
|
4.68/5 Rating |
|
Nov 22, 2024 Last updated |
Document Description: RS Aggarwal MCQs: Probability for Class 9 2024 is part of Mathematics (Maths) Class 9 preparation.
The notes and questions for RS Aggarwal MCQs: Probability have been prepared according to the Class 9 exam syllabus. Information about RS Aggarwal MCQs: Probability covers topics
like and RS Aggarwal MCQs: Probability Example, for Class 9 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for RS Aggarwal MCQs: Probability.
Introduction of RS Aggarwal MCQs: Probability in English is available as part of our Mathematics (Maths) Class 9
for Class 9 & RS Aggarwal MCQs: Probability in Hindi for Mathematics (Maths) Class 9 course.
Download more important topics related with notes, lectures and mock test series for Class 9
Exam by signing up for free. Class 9: RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9
Description
Full syllabus notes, lecture & questions for RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9 - Class 9 | Plus excerises question with solution to help you revise complete syllabus for Mathematics (Maths) Class 9 | Best notes, free PDF download
Information about RS Aggarwal MCQs: Probability
In this doc you can find the meaning of RS Aggarwal MCQs: Probability defined & explained in the simplest way possible. Besides explaining types of
RS Aggarwal MCQs: Probability theory, EduRev gives you an ample number of questions to practice RS Aggarwal MCQs: Probability tests, examples and also practice Class 9
tests
|
Explore Courses for Class 9 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
ppt
,Free
,Previous Year Questions with Solutions
,Sample Paper
,Extra Questions
,mock tests for examination
,RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9
,study material
,Viva Questions
,Summary
,video lectures
,Exam
,past year papers
,MCQs
,practice quizzes
,Important questions
,Semester Notes
,Objective type Questions
,RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9
,RS Aggarwal MCQs: Probability | Mathematics (Maths) Class 9
,shortcuts and tricks
;
Additional Information about RS Aggarwal MCQs: Probability for Class 9 Preparation
RS Aggarwal MCQs: Probability Free PDF Download
The RS Aggarwal MCQs: Probability is an invaluable resource that delves deep into the core of the Class 9 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the RS Aggarwal MCQs: Probability now and kickstart your journey towards success in the Class 9 exam.
Importance of RS Aggarwal MCQs: Probability
The importance of RS Aggarwal MCQs: Probability cannot be overstated, especially for Class 9 aspirants.
This document holds the key to success in the Class 9 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
RS Aggarwal MCQs: Probability Notes
RS Aggarwal MCQs: Probability Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to RS Aggarwal MCQs: Probability.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, RS Aggarwal MCQs: Probability Notes on EduRev are your ultimate resource for success.
RS Aggarwal MCQs: Probability Class 9 Questions
The "RS Aggarwal MCQs: Probability Class 9 Questions" guide is a valuable resource for all aspiring students preparing for the
Class 9 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study RS Aggarwal MCQs: Probability on the App
Students of Class 9 can study RS Aggarwal MCQs: Probability alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the RS Aggarwal MCQs: Probability,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of RS Aggarwal MCQs: Probability is prepared as per the latest Class 9 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup