Question

Номера комнат в гостинице состоят из трёх цифр, первая из которых указывает номер этажа, две другие - номер комнаты на этаже. в гостинице 5 этажей ( с номерами от 1 до 5 ), на каждом этаже по 35 комнат ( с номерами от 1 до 35 ). сколько всего цифр 2 использовано для нумерации комнат в гостинице ? Не копируйте ответы на эту задачу у других пользователей.

Answer 1

70- 1 этаж
70*5=350- 5 этажей

Answer 2

Numbering of Hotel Rooms

In the given hotel, the room numbers consist of three digits. The first digit represents the floor number, while the remaining two digits represent the room number on that floor. The hotel has a total of 5 floors, with each floor having 35 rooms numbered from 1 to 35.

To determine the total number of digits used for numbering the rooms in the hotel, we need to calculate the number of digits used for the floor numbers and the number of digits used for the room numbers.

Number of Digits for Floor Numbers

The hotel has 5 floors, numbered from 1 to 5. Since the floor numbers range from 1 to 5, only one digit is used to represent each floor number.

Number of Digits for Room Numbers

On each floor, there are 35 rooms numbered from 1 to 35. Since the room numbers range from 1 to 35, two digits are used to represent each room number.

Calculation

To calculate the total number of digits used for numbering the rooms in the hotel, we need to multiply the number of digits used for the floor numbers by the number of floors and add it to the product of the number of digits used for the room numbers by the number of rooms on each floor.

Number of digits for floor numbers: 1 digit Number of floors: 5 Number of digits for room numbers: 2 digits Number of rooms on each floor: 35

Total number of digits used for numbering the rooms in the hotel: = (Number of digits for floor numbers * Number of floors) + (Number of digits for room numbers * Number of rooms on each floor) = (1 * 5) + (2 * 35) = 5 + 70 = 75

Therefore, a total of 75 digits are used for numbering the rooms in the hotel.