A new street is built with one hundred new houses, numbered 1 to 100. How many number 9's are required to number all the houses?
What about 90,91,92,93,94,95,96,97,98 ?11
1 each for 9, 19, 29, 39, 49, 59, 69, 79, 89, and two for 99
Doh - you can tell I had a bad night!!!!!!!11
1 each for 9, 19, 29, 39, 49, 59, 69, 79, 89, and two for 99