Math topic中文

Measure of chance

probability as a measure of chance

Practice questions

  1. 1During a game, Lee rolled two fair six-sided die. To obtain the score, he subtracted the lower number from the higher nu…
  2. 2A bag contains some green counters, some orange counters and some yellow counters. The probability of picking a green co…
  3. 3In a class of 36 students, each student is either in a sports team or a performing arts club. Each student is also eithe…
  4. 4John owns a cleaning company that cleans office blocks. The number of employees in his company and their salaries in 202…
  5. 5A bag contains black, blue and yellow balls. A ball is picked at random from the bag. The probability that the ball is b…
  6. 6The diagram shows a goat tied to a pole at A. The length of the rope attached to the goat is 6 m. A is due west of the c…
  7. 7A box contains 15 marbles of which xx are green and the rest are yellow. Write down the probability, in terms of xx, t…
  8. 812 students from class A took a Mathematics test. The table below shows the test marks of the students. However, two of…
  9. 9A bag contains 150 chips. There are 60 blue chips, x red chips and y green chips in the bag. The probability of drawing…
  10. 10袋子里有33个红球，22个黄球，44个蓝球，从里面任意摸一个球，摸出 ___球的可能性大，摸出 ___球的可能性小。
  11. 11某市气象局预报称：明天本市的降水概率为80%，这句话指的是（ ） A. 明天本市80%的时间下雨，20%的时间不下雨 B. 明天本市一定下雨 C. 明天本市80%的地区下雨，20%的地区不下雨 D. 明天本市不下雨的可能性只有20%
  12. 12桌上倒扣着背面相同的55张扑克牌，其中33张黑桃、22张红桃.从中随机抽取一张，则()() A. 能够事先确定抽取的扑克牌的花色 B. 抽到黑桃的可能性更大 C. 抽到黑桃和抽到红桃的可能性一样大 D. 抽到红桃的可能…
  13. 13A survey was carried out to find the amount of money spent by 100 customers in a supermarket. This information was group…
  14. 14A city has people with Blood Types as follows: Type O 45% Type A 40% Type B 11% Type AB 4% Two persons are selected at r…
  15. 15John flipped a coin five times and obtained five successive heads. Is it conclusive that the coin is biased? Explain you…
  16. 16The diagram shows a lucky draw spinner at a departmental store. The pointer is equally likely to stop at any of the sect…
  17. 17A box has 20 pots of plants. There are 5 pink pots, 9 blue pots and the remaining pots are green. (i) Two pots are taken…
  18. 18The cumulative frequency diagram shows the time in hours that each of the 120 adults from Town A spend on exercise in on…
  19. 19The amount of mass loss in kilograms of 200 members was recorded by Amazing Fitness Centre over a one year period. The c…
  20. 20There are 12 girls and 9 boys in a group. Find, in its simplest form, the probability of selecting a boy randomly from t…
  21. 21瓶子里装着11块花生糖和4块水果糖，小丽取出一块，取出（ ）的可能性大． A. 花生煻 B. 水果糖 C. 无法确定
  22. 22The table shows the colour of the pen 200 people took during a game. A person is selected at random. Find, as a percenta…
  23. 23A bag contains 15 red marbles, some blue marbles and some yellow marbles. A marble is chosen at random from the bag. The…