In Tnagar many buildings were under residential category.for buildings they number as 1 to 100. For shops, corporation numbered between 150 and 200 only prime numbers. how many time 6 will appear in building numbering?

(a) 10 (b) 20 (c) 8 (d) 19

• buildings are numbered from 1 to 100
  so possibilities are
  6, 16, 26, 36, 46, 56, 60, 61....69, 76, 86, 96
  so totally there are 19 and in 66 there are two 6's
  so the answer is 20
• 14 years agoHelpfull: Yes(17) No(1)
• 19
• 14 years agoHelpfull: Yes(5) No(18)
• answer is 22.... u didnt considered 163 and 167...which are prime numbers having 6.......CHIAMAILLA
• 11 years agoHelpfull: Yes(1) No(2)