If you write all the numbers between 300 and 400 on paper. How many times have you used the number 3?

Question

120

Answer 1

The number 3 is used as the unit digit 100 times (from 300 to 399) and as the tens digit 10 times (from 30 to 39), so it is used a total of 110 times between 300 and 400.

Answer 2

20

Answer 3

To find out how many times the number 3 is used between 300 and 400, we need to count the digit 3 in all the numbers, including numbers like 33,_

Answer 4

To find out how many times the number 3 appears between 300 and 400, we can consider each place value separately. From 300 to 399, the number 3 appears 100 times as the hundreds digit. Additionally, the number 3 appears 100 times as the tens digit (from 30 to 39). So, in total, the number 3 appears 200 times between 300 and 400.