Number of Huts Puzzle

#135

In a village, there are 100 huts,

numbered from 1 to 100.
Someday..a visitor try to find all the huts which contains number "9"
How many huts he should find ??
and how many 9's are there  ?

  Difficulty Level - 2/5

  For Solution : Click Here     
  For Hint : Click Here