Question

Дима выписал все числа от 1 до 2014. На сколько больше он написал единиц, чем троек?а)5 б)251 в)1004 г)2014

Answer 1

Или Г или В) это скорей всего у вас Кенгуру)

Answer 2

Дима выписал все числа от 1 до 2014. На сколько больше он написал единиц, чем троек?

To find out how many more ones (единицы) Dima wrote compared to threes (тройки), we need to count the number of occurrences of each digit in the range from 1 to 2014.

Let's calculate the number of ones and threes in the given range:

The number of ones (единицы) in the range from 1 to 2014 can be calculated by counting the number of times the digit 1 appears in the numbers from 1 to 2014.

The number of threes (тройки) in the range from 1 to 2014 can be calculated by counting the number of times the digit 3 appears in the numbers from 1 to 2014.

To calculate this, we can use the following formulas:

Number of ones = Number of ones in units place + Number of ones in tens place + Number of ones in hundreds place + Number of ones in thousands place

Number of threes = Number of threes in units place + Number of threes in tens place + Number of threes in hundreds place + Number of threes in thousands place

Let's calculate the number of ones and threes using these formulas:

Number of ones in units place = 2014 % 10 = 4

Number of ones in tens place = (2014 // 10) % 10 = 1

Number of ones in hundreds place = (2014 // 100) % 10 = 0

Number of ones in thousands place = (2014 // 1000) % 10 = 2

Number of ones = 4 + 1 + 0 + 2 = 7

Number of threes in units place = 2014 % 10 = 4

Number of threes in tens place = (2014 // 10) % 10 = 1

Number of threes in hundreds place = (2014 // 100) % 10 = 0

Number of threes in thousands place = (2014 // 1000) % 10 = 2

Number of threes = 4 + 1 + 0 + 2 = 7

Therefore, Dima wrote the same number of ones and threes, which is 7.

So, the correct answer is г) 2014.