Multiple choice questions have become an integral part of the CBSE examination system. Compute the probability of the occurrence of an event if the probability the event not occurring is 0.56. .-. Find the probability of selecting a worker who is not married. 19. Find the probabiliy of getting ‘Two tails’. The table shows the marks obtained by a student in unit tests out of 50 : Find the probability that the student get 70% or more in the next unit test. From a deck of cards, 10 cards are picked at random and shuffled. On checking the box, it was found that half of the bolts and half of the nuts are rusted. 1. Find the probability of getting an odd number. [NCERT Exemplar Problem] (b) house is paying at the most Rs 69, for the milk bill. Only patriotism with violence is very dangerous. P(getting an odd number) = 138/250=69/125, 3. The number of times ‘2 Tails’ appeared was three times ‘No Tail’ appeared and number of times ‘1 tail’ appeared is double the number of times ‘No Tail’ appeared. So, we should obey the traffic rules as life is very precious. Total number of students = 10 + 13 + 12 + 5 = 40 A ball is drawn at the random, then what is the probability of drawing a blue ball. Free Question Bank for 9th Class Mathematics Probability Probability A box contains 50 bolts and 150 nuts. [CBSE-14-ERFKZ8H], [CBSE-14-17DIG1U] (iii) used at least one kind of mode of transport ? Check the below NCERT MCQ Questions for Class 9 Maths Chapter 15 Probability with Answers Pdf free download. Probability = Numbers of families having 1 girls/Total numbers of families, (iii)Numbers of families having no girls = 211 Number of times ‘1 Tail’ appeared =2x It is given that coin is tossed 200 times Total number of trials = 200 If one student is chosen at random, find the probability that the student is born : Number of children do not like potato chips = 364 – 91 = 273 273 Can the experimental probability of an event be a negative number? Then, number of times ‘2 Tails’ appeared =3x P(of getting two tails)=(3 x 60)/360 =1 /2, 17. [NCERT Exemplar Problem]. [CBSE-14-GDQNI3W] Type II —> Comedy and Family Number of students having blood group ‘B’ = 12 Number of bags containing more than 5 kg of flour = 7, Therefore, the probability that any of the bags chosen at random contains more than 5 kg of flour = 7/11. Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 9.. 23. Answer. For travelling, different mode of transport used by 1500 people are as follows: Number of events for getting less than three tails = 68 + 82 + 30 = 180 2.There is a group of 130 people who are patriotic, 50 people believe in violence. Practising these questions will help students to score good marks in this chapter. (iv) Most number of people in India died or injured due to accidents as compared to any other country. Find the probability of winning the race. Is it correct? In a sample study of 642 people, it was found that 514 people have a high school certificate. Required fields are marked *. A dice is rolled number of times and its outcomes are recorded as below : 24. Total balls = x + y + z allowed me to get 100% in class 9, Your email address will not be published. The probability of guessing the correct answer to a certain question is x/ 2.If probability of not guessing the correct answer is 2 /3 then find x. Question from very important topics are covered by NCERT Exemplar Class 9.You also get idea about the type of questions and method to answer in your Class 9th examination. [CBSE-15-6DWMW5A] (c) in the month having 30 days [CBSE-14-17DIG1U] (b) takes a halt after covering 115 km ? Required probability = 1 – P(4) – P(5) Hence, probability of winning the race is  11 / 18  . If the experimental probability calculated from this information is 2 /5 then how many times 6 came up ? (i) Number of students who obtained less than 20% in the mathematics test = 7, The probability that a student obtained less than 20% in the mathematics test = 7/90​, (ii) Number of students who obtained marks 60 or above = 15+8 = 23, The probability that a student obtained marks 60 or above = 23/90.