Value Based Questions Les différentes façons d'exprimer la probabilité d'un événement Réussissez 5 questions sur 7 pour passer au niveau supérieur ! (i) no boy child An insurance company selected 2000 drivers at random (i.e., without any preference of one driver over another) in a particular city to find a relationship between age and accidents. Also, check whether the sum of these probabilities is 1. SHORT ANSWER QUESTIONS TYPE-II p = 2 (1 – p) – 1/6 Free Question Bank for 9th Class Mathematics Probability Probability 15.If the probability of winning a race of an athlete is 1 / 6 less than the twice the probability of losing the race. =>18p=11 Total number of outcomes = 250 In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. Answer. We have provided Probability Class 10 Maths MCQs Questions with Answers to help students understand the concept very well. A dice is rolled number of times and its outcomes are recorded as below : If not, why? (b) in the month having 31 days Q.2. Answer. well done byjus Q.8: An organisation selected 2400 families at random and surveyed them to determine a relationship between income level and the number of vehicles in a family. [NCERT Exemplar Problem] [CBSE-15-NS72LP7] You can also … Faire des prévisions en utilisant les probabilités Réussissez 5 questions sur 7 pour passer au niveau supérieur ! 25. Thus,P(aboy)= y/(x+y), 13. 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Answer. In order, to have a peaceful environment both values are required patriotism and non¬violence. Solution: Number of boys = y Total number of chances = 23 + 72 + 77 + 28 = 200 Find the probability of the following events for a driver selected at random from the city: Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 9.. Q. = 211/1500 A survey of 2000 people of different age groups was conducted to find out their preference in watching different types of movies : Important questions for Class 9 Maths Chapter 15 Probability are available with solutions here for the final exam. 2.There is a group of 130 people who are patriotic, 50 people believe in violence. Two dice are thrown simultaneously 500 times. What is the probability of: If the three coins are simultaneously tossed again, compute the probability of 2 heads coming up. [CBSE-15-6DWMW5A] Number of blue balls = z Answer. Three coins are tossed simultaneously 200 times with the following frequencies of different outcomes : (iii) used at least one kind of mode of transport ? [CBSE-15-NS72LP7] Answer. Answer. Total number of outcomes = Sample space = 360, Now, assume that the number of times ‘No Tail’ appeared to be “x”, So, the number of times ‘2 Tails’ appeared = 3x (from the question), Also, the number of times ‘1 Tail’ appeared =2x (from the question), ∴ P(getting two tails) = (3 × 60)/360 = ½. Q.6: 1500 families with 2 children were selected randomly, and the following data were recorded: Compute the probability of a family, chosen at random, having. Register online for Maths tuition on Vedantu.com to score more marks in your examination. Total children = 364 Yes, the sum of these probabilities is 1. From a bag of red and blue balls, the probability of picking a red ball is x/2. (ii) P (no girl child) = 120 /750  =4 /25. Answer. =>p=11 / 18 Almost all exams have a section for MCQs. 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