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?

• 22 times
  
  from 1 to 100 appears 10times i.e 6,16,26,36,46,56,66,76,86,96 at unit place
  and in tens place 10 times (60,61,62,63,64,65,66,67,68,69)
  prime no bw 150 to 200 which has 6 in them are 163 and 167
  10+10+2=22
• 13 years agoHelpfull: Yes(18) No(25)
• kewal read the question carefully--it is given only for building not for both
• 13 years agoHelpfull: Yes(18) No(1)
• 21 times
  
  At unit place from 1 to 100 appears 10times i.e 6,16,26,36,46,56,66,76,86,96
  At tens place from 1 to 100 appears 10times i.e60,61,62,63,64,65,66,67,68,69
  66 is common both at units place & tens place.
  Prime no. between 150 to 200 which has 6 in them are 163 and 167
  Total=10+10+2-1(common 66)=21
• 13 years agoHelpfull: Yes(9) No(9)
• the answer asked is only for building numbering..hence it s only 20..
• 10 years agoHelpfull: Yes(8) No(0)
• 22 times
  
  between 1 to 100 6 appears 10 times in units place
  10 times in tens place
  and
  prime nos between 150 to 200 which has 6 in them are 163 and 167
  so total 22 times
• 13 years agoHelpfull: Yes(2) No(10)
• 21 times
  from 1 to 100 appears 10times i.e 6,16,26,36,46,56,66,76,86,96
  and in tens place 9 times (60,61,62,63,64,65,67,68,69)prime no bw 150 to 200 which has 6 in them are 163 and 167
  10+9+2=21
• 13 years agoHelpfull: Yes(2) No(17)
• they asked only for building 20 will be answer
• 9 years agoHelpfull: Yes(2) No(0)
• 22 times
  
  from 1 to 100 appears 10times i.e 6,16,26,36,46,56,66,76,86,96 at unit place count 66 only as one...
  and in tens place 10 times (60,61,62,63,64,65,66,67,68,69)..now 66 is counted again as there are two six present in it..
  prime no bw 150 to 200 which has 6 in them are 163 and 167
  10+10+2=22
• 13 years agoHelpfull: Yes(1) No(7)
• 33.
  THE NUMBER APPEAR SIX ARE AS FOLLOWS.
  6
  16
  26
  36
  46
  56
  61
  62
  63
  64
  65
  66
  67
  68
  69
  76
  86
  96
  156
  161
  162
  163
  164
  165
  166
  167
  168
  169
  176
  186
  196
  
  THERE ARE 31 NUMBERS BUT IN NUMBER 66 AND 166 CONTAINED 6 TWICE EACH. THEN SIX APPEARS IN 33 TIMES
• 13 years agoHelpfull: Yes(1) No(39)
• favorable numbers are=6,16,26,36,46,56,60,61,62,63,64,65,66,67,68,69,76,86,96,163,167.
  so .no . of times 6 will appear on buildings=22.
• 13 years agoHelpfull: Yes(1) No(4)
• 21 times
  
  At unit place from 1 to 100 appears 10times i.e 6,16,26,36,46,56,66,76,86,96
  At tens place from 1 to 100 appears 10times i.e60,61,62,63,64,65,66,67,68,69
  66 is common both at units place & tens place.
  Prime no. between 150 to 200 which has 6 in them are 163 and 167
  Total=10+10+2-1(common 66)=22
• 13 years agoHelpfull: Yes(0) No(6)