Class 9 Maths
Probability
Question 1:
Fifty seeds were selected at random from each of 5 bags of seeds and were kept under standardised conditions favourable to germination. After 20 days, the number of seeds which had germinated in each collection were counted and recorded as follows:
What is the probability of germination of
(i) More than 40 seeds in a bag?
(ii) 49 seeds in a bag?
(iii) More that 35 seeds in a bag?
Question 2:
The probability of a sure event and impossible event is ____.
Question 3:
A die is thrown 300 times and odd numbers are obtained 153 times. Find the probability of getting an even number.
Question 4:
The probability that a number selected at random from the numbers 1, 2, 3, …, 15 is a multiple of 4 is _____.
Question 5:
The probability of any event lies between _____.
Question 6:
Find the probability of drawing an ace card from a deck of cards.
Question 7:
What is the probability of getting an odd number less than 4, if a die is thrown?
Question 8:
There are 4 green and 2 red balls in a basket. What is the probability of getting the red balls?
Question 9:
If two coins are tossed simultaneously, then what is the probability of getting exactly two tails?
Question 10:
A batsman hits boundaries for 6 times out of 30 balls. Find the probability that he did not hit the boundaries.
Question 11:
Observe that table given.
|
Club |
English |
Maths |
Science |
|
Number of Students |
99 |
121 |
154 |
A student is chosen randomly from the group as the coordinator of the entire club. What is the probability that the student is from the science club?
Question 12:
A coin is flipped to decide which team starts the game. What is the probability of your team will start?
Question 13:
In a bag, there are some marbles of blue colour. A boy picks one marble out of all. What is the probability that the picked marble is of blue colour?
Question 14:
There are 10 prizes on 2000 tickets of a lottery of company. Probability of winning prize is ____
Question 15:
There are 20 cards numbered 1 to 20 in a box. A card is drawn from it. Find the probability that the number appeared on the drawn card is prime.
Question 16:
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, compute the probability that he/she does not like to eat potato chips.
Question 17:
The blood groups of some students of Class IX were surveyed and recorded as below:
If a student is chosen at random, find the probability that he/she has blood group A or AB.
Question 18:
A box contains 50 bolts and 150 nuts. On checking the box, it was found that half of the bolts and half of the nuts are rusted. If one item is chosen at random, find the probability that it is rusted.
Question 19:
The probability of guessing the correct answer to a certain question is . If probability of not guessing the correct answer is
, then find x.
Question 20:
If the probability of winning a race of an athlete is less than the twice the probability of losing the race, find the probability of winning the race.
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In summary, problem-solving after learning a theoretical concept on CBSE Probability Class 9 Maths is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.
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Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.
All About Daily Practice Problems on Class 9 Maths Probability NCERT Chapter 15
Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Maths Probability NCERT Chapter 15 useful.
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