Question

if i write the numbers 1 trough 43, how many digits do i write

Answer 1

Answer:

77 digits.

Step-by-step explanation:

Numbers 1 through 9 are single digit numbers.  You will be writing the digits 1, 2, 3, 4, 5, 6, 7, 8 and 9, which give 9 numbers.

Numbers 10 through 43 are double digit numbers.  

10-19 give ten numbers.  20-29 give ten numbers.  30-39 give ten numbers.  40-43 give four numbers.  So, there is  total of 34 numbers.

However, we have to find the number of digits.

Numbers 1 through 9 contain single digits.  Therefore, number of numbers times number of digits in that category gives total number of digits.

9 x 1 = 9 digits (Single digit numbers)

34 x 2 = 68 digits (Multiplying by 2 since 10-43 are double digit numbers).

Adding the sums, we get:

68 + 9 = 77 digits.

These are the number of digits written.