28/03/2020 Probability(Senior Class Maths Study by Topics) 28/03/2020 0Comments by Gate Academy Welcome to your Probability(Senior Class Maths Study by Topics) NAME EMAIL PHONE NUMBER 1. A university undergraduate has to take 5 courses from a pool of 4 Mathematics and 3 Physics courses.In how many ways can she select her courses if she insists on taking all four Mathematics courses? 3 9 6 12 2. The data below shows the number of students that represented a Government Secondary School in a Mathematics Competition Find the probability that a student picked at random is in SS1 8/25 8/45 4/12 4/25 3. The table below shows the frequency distribution of marks obtained by 40 students in a testIf a student is selected at random, find the probability that he scored at least 7 marks 1/8 27/40 7/8 1/4 4. A bag contains 6 red balls, 9 blue balls and 5 green balls. Two balls are chosen one after the other with replacement. What is the probability that they are of the same colour? 19/100 71/100 9/100 27/100 5. The letters of the word MISSISSIPPI are cut and placed in a bag. If one letter is drawn randomly from the bag, the probability that it is neither an I nor a S is 8/11 3/11 1/2 6/11 6. Three balls are drawn one after the other, without replacement from a bag containing 4 blue, 6 white and 5 red identical balls.The probability of picking 2 blue and 1 red ball is 4/225 6/91 8/273 2/91 7. A number is selected randomly from the set of integers 1 to 20 inclusive. The probability that the number is prime is 1/2 2/5 9/20 7/20 8. A coin is tossed 3 times. What is the probability of getting 2 heads and a tail in any order? 1/2 3/8 1/8 1/4 9. A coin and a dice are thrown together. Find the probability of getting a tail and a two 1/6 1/12 1/2 1/4 10. A bag contains 6 red balls, 12 white balls and 9 green balls. A ball is selected at random. What is the probability that it is not a green ball? 5/9 2/3 4/9 1/3 11. Two numbers are drawn randomly from the four numbers 1, 3, 5 and 8. The probability that the sum of the two is not odd 2/3 1/2 1/3 1/4 12. Two events M and N are mutually exclusive and P(M) = ¼ and P(N) = 2/3.P(M∪N) is 1/2 1 1/12 11/12 13. A box contains yellow, blue and white counters. The probability of picking a yellow counter is 3/8 and the probability of picking a blue counter is 35%.If there are 40 counters in the box, find the number that is yellow 15 11 16 14 14. A card is drawn from an ordinary pack of 52 playing cards. Find the probability that it is neither a seven nor a Diamond 3/52 9/13 4/13 1/52 15. A box contains yellow, blue and white counters.The probability of picking a yellow counter is 3/8 and the probability of picking a blue counter is 35%. If there are 40 counters in the box, find the number that is blue 14 12 13 11 16. A bag contains 4 red, 8 green and 6 blue ball of identical size. The probability that a ball selected randomly is either red or green is 2/9 2/3 1/3 4/9 17. Three guests X, Y and Z arrive in that order for a dinner party. If guests are served randomly, the probability that the three guests will be served in the sequence of their arrival is 2/3 1/3 1/6 1/2 18. Tireni throws a coin twice. The coin is biased so the probability of landing a head is 2/5. Find the probability that she throws two tails 3/25 1/4 9/25 1/5 19. The probability that a sum of 10 will appear in two tosses of a fair die is 1/12 1/4 1/6 5/18 20. The probability of obtaining a prime number in a single toss of fair die is 1/6 1/2 1/4 1/3 21. A coin and a dice are thrown together. Find the probability of getting a head and a score greater than 4 1/4 1/12 1/2 1/6 22. Two dice, one red and the other blue are rolled together. Find the probability of obtaining a total score of 7 1/4 1/6 1/5 1/3 23. The probabilities that a husband and his wife will be alive in 10 years time is 0.7 and 0.8 respectively.What is the probability that at that time both of them would be alive 0.8 0.3 0.56 0.06 24. A coin is tossed 3 times.What is the probability of getting three tails? 1/2 1/8 1/4 3/8 25. A photograph is to be taken of five people including a married couple. If the married couple insist on sitting next to each other, the number of different arrangements is 24 12 48 60 1 out of 25 Time is Up! Time's up