A construction company wants to number new houses using digit plates only. If the company puts an order for 1212 plates, how many houses are to be given numbers? (The numbers of houses are consecutive and the number of the first house is 1).	Choose the correct answer:	A) 260	B) 440	C) 556	D) 792	E) 1200
Run the numbers for houses. For the first 9 houses we need 9 signs.   For the next 90 we need 2 signs each or 180.   For the next 900 houses we need 3 signs each.   If we assume 300 homes, we will need 189 signs for the first 99 homes and then 603 signs for the 201 homes. So, we will use 792 signs for the first 300 homes and will have 420 signs remaining, which is enough for 42034203 or another 140 homes.   The total number of homes is 440   Answer: 440
<result>B</result>
A construction company wants to number new houses using digit plates only. If the company puts an order for 1212 plates, how many houses are to be given numbers? (The numbers of houses are consecutive and the number of the first house is 1).