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

• 6 will appear 20 times between 1 to 100
  so they asked only for building numbering
  so ans:20
• 13 years agoHelpfull: Yes(36) No(10)
• For 1 to 10 - 1 six
  2 to 20 - 1 six
  Similarly upto 59 we utilise six, 6 times
  from 60 to 69 (including 66) - 11 times
  from 70 to 100 - 3, hence ans = 6+11+3 = 20
  from 150 - 200(163,167 are prime)so 20+2=22
  S the answer should be 22 and not 20
• 13 years agoHelpfull: Yes(9) No(28)
• ans is 22 because 163 and 167 are prime nos.
  
• 12 years agoHelpfull: Yes(3) No(9)
• Building numberings are 6, 16, 26, 36, 46, 56, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 76, 86, 96
  
  ANS :19
  
• 10 years agoHelpfull: Yes(3) No(11)
• 6 appears only 19 times in between 1 to 100
• 7 years agoHelpfull: Yes(0) No(2)
• ans is 19.bcoz 6 repeat like 6,16,26,36,46,56,60,61,62,63,64,65,66,67,68,69,76,86,96
• 6 years agoHelpfull: Yes(0) No(1)