Question

Хулиган Вася живет в двадцатиэтажном доме.После того как Вася однажды покатался в лифте, в нем стали работать только 2 кнопки 5 (при нажатии на эту кнопку лифт поднимается на 5 этажей вверх если это возможно) и 7 (при нажатии на эту кнопку лифт опускается вниз если это возможно) Можно ли пользуясь таким лифтом попасть: а) с первого этажа на второй б)со второго этажа на первый в) с третьего на двадцатый

Answer 1

Со второго этажа на первый: сначала мы на втором;потом мы поднимается на 7 этаж ( нажимаем кнопку 5);потом мы спускается на первый(нажимаем кнопку 7)

Answer 2

Elevator Problem-Solving

Given Information: - Vasya lives in a 20-story building. - After one ride, only the 5th and 7th floor buttons work in the elevator.

Possible Destinations: a) From the 1st floor to the 2nd floor b) From the 2nd floor to the 1st floor c) From the 3rd floor to the 20th floor

Solution: - a) From the 1st floor to the 2nd floor: Since the elevator only goes up 5 floors at a time, it is not possible to go directly from the 1st floor to the 2nd floor using this elevator. - b) From the 2nd floor to the 1st floor: Similarly, it is not possible to go directly from the 2nd floor to the 1st floor using this elevator. - c) From the 3rd floor to the 20th floor: It is possible to reach the 20th floor from the 3rd floor using the available buttons. The elevator can go down 5 floors at a time, so by pressing the 7th floor button four times, the elevator will reach the 20th floor.

The limitations of the elevator restrict the direct movement between adjacent floors, making it impossible to travel between the 1st and 2nd floors or the 2nd and 1st floors. However, it is feasible to reach the 20th floor from the 3rd floor by utilizing the available buttons.

I hope this solution helps! If you have any more questions or need further assistance, feel free to ask.