Question

What is the total number of digits from 1to100

Answer 1

If we write down the numbers from 1 to 100 ,we need to use 192 digits. one each from the number from 1 to 9, two each for each of the ninety numbers from 10 to 99 , and three for the number 100. How many of these digits are zeros? The digit zero appears only in the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.