Question

Степан, Иван и Николай преподают разные дисциплины: один – математику, второй — фи- зику, третий – химию. Живут они тоже в разных городах: Клину, Воронеже и Пскове. Степан ра- ботает не в Клину, Николай не в Пскове, жи- тель Клина преподает не математику, Николай преподает не физику. Повезло только жителю Воронежа: он преподает любимую им химию. Желательно сделать в виде таблицы.

Answer 1

Имя             Предмет          Город

Степан        Математика    Псков

Иван            Физика            Клин

Николай      Химия              Воронеж

Объяснение  Николай преподает химию а соответственно он живет в Воронеже Иван преподает физику а так как Николай живет в Воронеже Иван может жить только в Пскове и Клину  также нам известно что житель Клина преподает не математику а так как Иван преподает физику то это значит что Иван живет в городе Клин  и у нас остается Степан он преподает математику а соответственно живет в Пскове. Пожалуйста отметь этот ответ как лучший

Answer 2

Problem Analysis

We are given that Stepan, Ivan, and Nikolai teach different subjects: one teaches mathematics, another teaches physics, and the third teaches chemistry. They also live in different cities: Klin, Voronezh, and Pskov. We are provided with the following clues: - Stepan does not work in Klin. - Nikolai does not work in Pskov. - The resident of Klin does not teach mathematics. - Nikolai does not teach physics. - The resident of Voronezh teaches their favorite subject, which is chemistry.

We need to determine which person teaches which subject and lives in which city.

Solution

To solve this problem, we can create a table to organize the information and track the possible combinations.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | | | | Ivan | | | | Nikolai | | |

From the given clues, we can deduce the following information: 1. Stepan does not work in Klin. 2. Nikolai does not work in Pskov. 3. The resident of Klin does not teach mathematics. 4. Nikolai does not teach physics. 5. The resident of Voronezh teaches their favorite subject, which is chemistry.

Filling in the Table

Let's start by filling in the information we know for sure: - The resident of Voronezh teaches chemistry.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | | | | Ivan | | | | Nikolai | Chemistry | Voronezh |

Now, let's use the remaining clues to fill in the table: - Stepan does not work in Klin. Since the resident of Klin does not teach mathematics, and Stepan does not work in Klin, Stepan must teach physics or chemistry. However, since the resident of Voronezh teaches chemistry, Stepan must teach physics.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | Physics | | | Ivan | | | | Nikolai | Chemistry | Voronezh |

- Nikolai does not work in Pskov. Since Stepan teaches physics and Nikolai does not teach physics, Nikolai must teach mathematics. Therefore, Ivan must teach chemistry.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | Physics | | | Ivan | Chemistry | | | Nikolai | Mathematics | Voronezh |

- The resident of Klin does not teach mathematics. Since Stepan teaches physics and Nikolai teaches mathematics, Ivan must be the resident of Klin.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | Physics | | | Ivan | Chemistry | Klin | | Nikolai | Mathematics | Voronezh |

- Finally, we know that Nikolai does not work in Pskov. Therefore, Stepan must be the resident of Pskov.

| Person | Subject | City | |----------|-----------|-----------| | Stepan | Physics | Pskov | | Ivan | Chemistry | Klin | | Nikolai | Mathematics | Voronezh |

Solution Summary

Based on the given information and the deductions made, we can conclude the following: - Stepan teaches physics and lives in Pskov. - Ivan teaches chemistry and lives in Klin. - Nikolai teaches mathematics and lives in Voronezh.

Answer

Based on the information provided, the table below summarizes the subjects taught by each person and the city they live in:

| Person | Subject | City | |----------|-----------|-----------| | Stepan | Physics | Pskov | | Ivan | Chemistry | Klin | | Nikolai | Mathematics | Voronezh |

Please let me know if there is anything else I can help you with!