A coin is tossed twice. So probability P(E)= n(E), 11.If a number is selected at random from the set {1, 2, 3, …., 100}, then the probability that the selected number is a perfect cube is -. c. 5/18 Section B – This section contains some examples that demonstrate how to solve questions on Probability using short tricks, formulas shown in section A. Solution: d. Let E be the event that the bulbs have life less than 800 hrs. P(A and B) is the probability of the occurrence of both A and B at the same time. c. 0 In a certain state’s lottery, 48 balls numbered 1 through 48 are placed in a machine and six of them … We will see many questions and answers on the topic Probability with tricks/shortcuts to solve them. An event with a probability of 1 can be considered a certainty: for example, the probability of a coin toss which results in either head or tail is 1, because there are no other options, when we assume the coin lands flat. What is the probability that it is neither a club nor a king? An apple is drawn and then another apple is drawn without replacement. c. 1/480 d. None of these 21. The probability of the man’s selection is 1/5 and the probability of the friend’s selection is 1/8. 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The probability of Sangeet to win = P(S) = 0.62, The probability of Rashmi to win = P(R) = 1 – P(S). 7/18 Solution: b. c. 1/12 It is a state of probability. 9. a. a. 20.Find the probability that in a random arrangement of the letters of the word ‘VETERINARY’ the two E’s come together. Solution: c, Total names in the lucky draw= 4×200+3×250+2×100, 17. … The probability that the life is 1250 hrs is: Y = Event that Y speaks the truth 3 black and 6 yellow are marked IMPORTANT. d. 9/20 (iii) The frequency that tyre requires replacement between 4000 km and 14000 km = 210 + 325 = 535. Get Probability For Class 10 at BYJU’S. If two coins are tossed, then S= {HH, HT, TH, TT}, When a dice is rolled, we have S = {1,2,3,4,5,6}. b. Since, the apple is not replaced there are now 11 odd numbered apples and total 24 apples left. What is the probability of getting a sum 9 from two throws of a dice? There are 200 Year-III, 250 Year-II and 100 Year-I students who applied. The frequency of a tyre required to be replaced before covering 4000 km = 20, (ii) The frequency that tyre will last more than 9000 km = 325 + 445 = 770. a. Solution: b. If a card is chosen in random from this set, find the possibility of choosing a yellow card or an ‘IMPORTANT’ card? c. 4/15 3/20 For example, when a test is conducted, then the student can either get a pass or fail. 1/70 … The questions here will be provided, as per NCERT guidelines. S ={(1,5),(1,6),(1,7),(2,5),(2,6),(2,7),(3,5),(3,6),(3,7),(4,5),(4,6),(4,7)}. A pack contains 3 blue, 1 red and 5 black pens. So, let’s start the learning now. So, the probability is 0. 2/5 Let the event of the occurrence of a number that is odd be ‘A’ and the event of the occurrence of a number that is less than 5 be ‘B’. b. Solution: d, Probability of getting club or a king =13+3, So probability of getting neither club nor a king = 1−4/13. c. 2/9 Solution: Let S and R denote the events that Sangeeta wins the match and Reshma wins the match, respectively. 13/20 a. 4/9 There are 4 honours in each suit. b. Refer to the above table and answer the question: 10. a. If a pen is drawn at random from the pack, replaced and the process is repeated 2 more times, what is the probability of drawing 2 blue pens and 1 black pen? b. c. 5/13 c. 50% a. So, P(scoring more than 70% marks) = ⅗ = 0.6, 4. The card is drawn at random. Solution: a, The probability that first apple shows the odd number =12/25. Taking two E’s as one letter, number of ways of arrangement in which both E’s are together =9! b. 1/5 b. Solution: b, Probability = [ Favourable outcomes]/ Total, So probability = 5/20+9/20-6/20, 6. What is the percentage of cases that X and Y are likely to contradict each other, narrating the same incident? The chapter Probability has been included in Class 9, 10, 11 and 12. Each Year-III’s name is placed in the lucky draw 4 times; each Year-II’s name 3 times and Year-I’s name, 2 times. a. What is the probability of getting a prize if a card is taken at random?
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