Question

14 учеников класса занимаются музыкой, а 15 спортом.5 учеников не занимаются ни музыкой, ни спортом . сколько учеников посещают и музыку,и спорт, если в классе 30 учеников?

Answer 1

4 ученика занимаются и музикой и спотром

Answer 2

Problem Analysis

We are given the following information: - There are 14 students in the class who study music. - There are 15 students in the class who participate in sports. - 5 students do not participate in either music or sports. - The total number of students in the class is 30.

We need to determine how many students participate in both music and sports.

Solution

Let's break down the information given:

- Number of students who study music: 14 - Number of students who participate in sports: 15 - Number of students who do not participate in either music or sports: 5 - Total number of students in the class: 30

To find the number of students who participate in both music and sports, we can use the principle of inclusion-exclusion.

We can start by adding the number of students who study music and the number of students who participate in sports:

14 + 15 = 29

However, this count includes the students who participate in both music and sports twice. To correct for this, we need to subtract the number of students who participate in both music and sports:

29 - x = 30

Solving for x, we find that x = 29 - 30 = -1.

Since we cannot have a negative number of students, we can conclude that there is an error in the given information. Please double-check the numbers provided.

If you have any further questions, please let me know.