"Probability of Equally Possible Events" Probability Preliminary PPT (Lesson 1)

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"Probability of Equally Possible Events" Probability Preliminary PPT (Lesson 1)

Part One: Learning Objectives

1. Experience the process of "raising questions, guessing, thinking and communicating, abstract generalization, and solving problems", understand the characteristics of classical concepts, and judge whether the test results are equal or not based on the symmetry or balance of the random test results.

2. Master the probability calculation method of classical concepts.

Probability of equally possible events PPT, part 2 content: classic examples

[Example 1] Randomly select one person from four people, Xiao Ming, Xiao Cong, Xiao Hui and Xiao Ying, to participate in the elderly care activity organized by the school. Then the probability of Xiao Ming being selected is ________.

[Example 2] A school in Shenzhen organized a knowledge competition with a total of 20 questions, including 10 questions about China’s excellent traditional culture, 6 practical application questions, and 4 innovation ability questions. Xiaojie chose one of the questions to answer. , the probability that he selects the innovation ability test question is ()

A.1/5 B.3/10

C.2/5 D.1/2

[Example 3] From 100 cards numbered 1 to 100, randomly select one card, and the probability that its number is a multiple of 3 is ()

A.33/100 B.34/100

C.3/10 D.Unable to determine

Probability of equally possible events PPT, part 3: Variation practice

1. (2019 Zunyi) Xiao Ming set a six-digit power-on password for his mobile phone using numbers from 0 to 9, but he forgot the last digit. The probability that Xiao Ming can open the mobile phone by entering the password only once is ______.

2. Draw 2 "diamonds", 3 "clubs", and 1 "heart" from the same deck of playing cards. Turn these 6 cards face up and randomly draw 1 from them. The probability of it being a "heart" for()

A.1/6 B.1/3

C.1/2 D.2/3

3. Xiao Ming throws a uniform dice. The six sides of the dice are engraved with 1, 2, 3, 4, 5, and 6 points respectively. The probability of getting an odd number is ______.

Probability of other possible events PPT, Part 4: Consolidation training

4. (2019 Yichang) In the prize-winning competition with the theme of "Practice Ecological Civilization, You and Me Act Together", Class 903 set up a total of four categories of competition content: "Ecological Knowledge, Ecological Skills, Ecological Habits, and Ecological Culture". If The participating students have the same probability of drawing each category, so the probability of Xiaoyu drawing "ecological knowledge" when participating is ()

A.1/2 B.1/4

C.1/8 D.1/16

5. (2019 Huzhou) It is known that 2 of the 10 existing bottles of beverages have expired. The probability of picking up any one of these 10 bottles of beverages and getting exactly the beverage that has expired is ()

A.1/10　 B.9/10

C.1/5　 D.4/5

6. The probability that any chosen letter in the English word "parallel" is "a" is ()

A.1/2 B.3/8

C.1/4 D.1/8

7. Repeat the experiment under the same conditions. If the probability of event A happening is 7/100, which of the following statements is correct ()

A. The frequency of event A is 7/100

B. Repeat this experiment in large numbers, and event A only occurred 7 times.

C. Do this kind of experiment 100 times, event A will definitely happen 7 times

D. Do this experiment 100 times, event A may occur 7 times

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For more information about the PPT courseware "Probability Preliminary PPT and Other Possible Events" PPT courseware, please click on the Probability PPT tab of Preliminary Probability PPT and Other Possible Events.

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Update Time: 2024-11-11

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