Welcome to your Probability(Senior Class Maths Study by Topics) NAME EMAIL PHONE NUMBER 1. A number is selected randomly from the set of integers 1 to 20 inclusive. The probability that the number is prime is 7/20 9/20 1/2 2/5 2. A figure is selected randomly from a group of figures consisting of a square, a triangle, a rectangle, a trapezium and a rhombus. The probability that the figure selected is a parallelogram is 4/5 3/5 2/5 1/5 3. 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 none will be alive? 0 0.56 0.06 1 4. A ball is selected and replaced in a bag containing blue, green and red identical balls. The results of 50 selections are shown belowColor of ball Blue Green RedNo. of occurrences 8 15 27The experimental probability of picking either a blue or a red ball is 0.54 0.16 0.70 0.30 5. P is a probability function of an exhaustive set S = {w, x, y, z}. If P(x) = 1/4, P(y) = 1/3, P(z) = 1/6, then P(w) is 1/4 1/12 3/4 1/72 6. A container has 32 blue pens, 28 black pens and 20 red pens. If a pen is selected at random, what is the probability that it is a blue pen or a red pen? 1/20 13/20 1/4 3/4 7. Two dice, one red and the other blue are rolled together. Find the probability of obtaining a total score divisible by 3 1/4 1/5 1/3 1/2 8. The probability that a sum of 10 will appear in two tosses of a fair die is 1/4 1/12 1/6 5/18 9. 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 0.06 0.56 0.3 10. Two fair coins are tossed. The probability of getting at least one tail is 3/4 1/4 2/3 1/2 11. A coin is tossed 3 times. What is the probability of getting 2 heads and a tail in any order? 1/2 1/4 3/8 1/8 12. 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 1/52 4/13 9/13 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 11 14 16 15 14. 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 at least one will be alive? 0.06 0.94 0.3 0.7 15. The table below shows the result of tossing a fair dice 200 timesFind the relative freqeuncy of getting an odd number 3/20 93/200 99/100 1/100 16. Two fair dice are thrown together. The probability that the two dice will show the same number of points is 1/3 1/36 1/2 1/6 17. A die is rolled 100 times with the following outcomes:Number 1 2 3 4 5 6Frequency 15 20 18 14 17 16The experimental probability of obtaining a 2 is 0.80 0.10 0.20 0.40 18. The data below shows the distribution of workers in a certain secondary school. Teacher 30 Gardeners 15Typists 9 Cleaners 6Clerks 12 Messengers 3If one of the workers is absent from work on one particular day, the probability that he is a clerk is 1/25 2/25 3/25 4/25 19. Cards are drawn from a pack of 52 playing cards one at a time. Calculate the probability of drawing without replacement 3 diamonds 1/34 15/769 1/52 11/850 20. How many different three-digit numbers can be formed using integers 1 to 6 if no integer occurs twice in a number? 60 20 240 120 21. 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 so that she takes at least two courses in Physics? 12 6 18 72 22. A coin and a dice are thrown together. Find the probability of getting a head and a score greater than 4 1/2 1/6 1/4 1/12 23. Cards are drawn from a pack of 52 playing cards one at a time. Calculate the probability of drawing without replacement 2 red cards 17/100 19/200 1/3 25/102 24. Yusuf threw a die 20 times and obtained the results shown below:Find Yusuf's experimental probability of obtaining 4 or 5 1/4 1/2 1/3 2/3 25. 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 27/100 9/100 1 out of 25 Time is Up! Time's up