A certain street has 1000 buildings. A sign-maker is
contracted to number the houses from 1 to 1000. How many
zeroes will he need?
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Answer Posted / guest
Divide 1000 building numbers into groups of 100 each as
follow:
(1..100), (101..200), (201..300), ....... (901..1000)
For the first group, sign-maker will need 11 zeroes.
For group numbers 2 to 9, he will require 20 zeroes each.
And for group number 10, he will require 21 zeroes.
The total numbers of zeroes required are
= 11 + 8*20 + 21
= 11 + 160 + 21
= 192
| Is This Answer Correct ? | 132 Yes | 11 No |
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