Class 9 Exam  >  Class 9 Notes  >  Mathematics (Maths) Class 9  >  Very Short Answers Type Questions: Probability

Class 9 Maths Chapter 14 Question Answers - Probability

Question 1. A die is thrown once. Find the probability of getting a prime number.
Solution:
Number of possible outcomes = 6
Number of favourable outcomes = 3
∴ 2, 3 and 5 are prime numbers
∴ Required probability = (3/6) or (1/3)


Question 2. A coin is thrown once. Find the probability of getting a head.
Solution:
Number of possible outcomes = 2
Number of favourable outcome = 1
∴ The required probability = (1/2)


Question 3. From a group of 2 boys and 3 girls, we select a child. Find the probability of this child being a girl.
Solution:
Total number of outcomes = 3 + 2 = 5
Number of favourable outcomes = 3
∴ The required probability = (3/5)

The document Class 9 Maths Chapter 14 Question Answers - Probability is a part of the Class 9 Course Mathematics (Maths) Class 9.
All you need of Class 9 at this link: Class 9
44 videos|412 docs|55 tests

Top Courses for Class 9

FAQs on Class 9 Maths Chapter 14 Question Answers - Probability

1. What is probability?
Ans. Probability is a branch of mathematics that deals with the likelihood or chance of an event occurring. It is represented as a number between 0 and 1, where 0 represents impossibility and 1 represents certainty.
2. How is probability calculated?
Ans. Probability is calculated by dividing the number of favorable outcomes by the total number of possible outcomes. The probability of an event is equal to the ratio of favorable outcomes to the total outcomes.
3. What is the difference between theoretical probability and experimental probability?
Ans. Theoretical probability is based on mathematical calculations and assumes that all outcomes are equally likely. Experimental probability, on the other hand, is based on actual data collected from experiments or observations.
4. What are independent events in probability?
Ans. Independent events in probability are events that do not affect each other's outcomes. The occurrence of one event does not influence the probability of the other event.
5. How do you calculate the probability of two independent events occurring together?
Ans. To calculate the probability of two independent events occurring together, you multiply the probabilities of each event happening individually. This can be represented as P(A and B) = P(A) * P(B), where P(A) and P(B) are the probabilities of events A and B respectively.
44 videos|412 docs|55 tests
Download as PDF
Explore Courses for Class 9 exam

Top Courses for Class 9

Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev
Related Searches

ppt

,

Objective type Questions

,

practice quizzes

,

Semester Notes

,

Viva Questions

,

Sample Paper

,

Class 9 Maths Chapter 14 Question Answers - Probability

,

Class 9 Maths Chapter 14 Question Answers - Probability

,

pdf

,

Exam

,

mock tests for examination

,

shortcuts and tricks

,

Important questions

,

Class 9 Maths Chapter 14 Question Answers - Probability

,

Summary

,

MCQs

,

study material

,

Extra Questions

,

past year papers

,

Previous Year Questions with Solutions

,

Free

,

video lectures

;