infosys - bangalore mysore has 1100 buildings a painter was engaged by the mysore corporation after calling for sealed tenders fixing the last date for receipt of tenders and the tender was opened in the presence of representatives of tenderers how many zeros - skillgun

Divide 1100 building numbers into groups of 100 each as follow:
1..100 is one group and 101..200, 201..300, ...to 801...900 also 1101-1100 ..901..1000
For the first group, sign-maker will need 11 zeroes.
For group numbers 201 to 900 and 1101 to 1100 , he will require 20 zeroes each.
And for group number 10 (from 901 to 1000), he will require 21 zeroes.
The total numbers of zeroes required are
= 11 + (9 x 20) + 21 = 212