+54 Numbers are numbered consecutively numbers from 1-500 which cost 5 cents each. How much will the cost of all the digits be?
+130511 I'm assuming that you're saying that each digit costs 5 cents...if so, we have that.....
There are 401 numbers with 3 digits each [ 100 - 500]
There are 90 numbers with 2 digits each [ 10 - 99]
There are 9 digits with one number each [ 1 - 9]
So
5 * [ 401(3) + 90(2) + 9(1) ] =
5 * [ 1203 + 180 + 9] =
5 * [1392] =
6960 cents = $69.60
