Almost got me on this one. 20 numbers but 29 digits
744 digits.
There are 167960 9 digits combinations between numbers 1 and 20.
To write the numbers from 1 to 20, we need to count the digits used for each range. The numbers 1 to 9 use 1 digit each, totaling 9 digits. The numbers 10 to 20 use 2 digits each, totaling 22 digits (11 numbers). Therefore, the total number of digits required to write all the numbers from 1 to 20 is 9 + 22 = 31 digits.
630 digits.
36
There are the digits 1 through 9 for the first digit. Then, we have 0 through 9 for the second digit - excluding the first digit. For the third digit, we have 0 through 9 excluding the two previous digits
192 digits
There are 2892 digits.
the main purpose of multiplication is to multiply 1 through as many digits as you want. :)
There are 2700 digits.
11522
Eleven 1 + 1 = 2 1 x 1 = 1