Question

Всего в классе 20 человек, 1 из них ходит на кружок рисования, 8 на урок математики, 1 не ходит никуда. Найдите вероятность того что случайно выбранный ходит на оба кружка​

Answer 1

Ответ:

15%

Пошаговое объяснение:

делим умножаем и получается 15%

Answer 2

Problem Analysis

We are given the following information about a class: - There are 20 students in the class. - 1 student attends an art club. - 8 students attend math lessons. - 1 student does not attend any club or lesson.

We need to find the probability that a randomly chosen student attends both the art club and math lessons.

Solution

To find the probability, we need to determine the number of students who attend both the art club and math lessons, and then divide it by the total number of students.

Let's calculate the number of students who attend both the art club and math lessons:

- Number of students attending the art club: 1 - Number of students attending math lessons: 8

Since we know that 1 student attends both the art club and math lessons, the number of students who attend both is the minimum of the two numbers, which is 1.

Now, let's calculate the probability:

- Total number of students: 20 - Number of students attending both the art club and math lessons: 1

The probability is given by the formula:

Probability = (Number of students attending both) / (Total number of students)

Probability = 1 / 20

Therefore, the probability that a randomly chosen student attends both the art club and math lessons is 1/20.