In a particular city there are 100 homes numbered from 1,2,3,..,100. The city was build by a builder from Chennai. There was 4 to 5 shops in the town which was build by a builder from Mumbai. The 2nd builder can build in 1½ times as compared to time by 1st builder. The 2nd builder builds in 15 days, then how many 2's are used by the builder from Chennai in
numbering the 100 homes?
(a) 17 (b) 18 (c) 19 (d) 20

• hey channapatna.. it's 20. u have to count twice in 22
• 14 years agoHelpfull: Yes(30) No(7)
• no of 2s used are (2,12,20,21...29,32,42,52,62,72,82,92)
  totally 20
• 14 years agoHelpfull: Yes(26) No(2)
• in the last line it should be given
  the builder from Chennai in numbering the 100 homes?
  then ans is 20
• 14 years agoHelpfull: Yes(16) No(3)
• no of 2s...2,12,20,21,22,23,24,25,26,27,28,29,32,42,52,62,72,82,92
  total 19 i guess
• 14 years agoHelpfull: Yes(9) No(50)
• 20,
  11 2's from 21 to 30 and 8 2's from 1 to 10 and 31 to 100
• 10 years agoHelpfull: Yes(0) No(1)