11. 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

• Ans: b ) 20
  6,16,26,36,46,56,60,61,62,63,64,65,66,67,68,69,76,86,96
• 14 years agoHelpfull: Yes(25) No(7)
• answer : (b) 20
  From 1-10 number 6 appears 1 time
  similarly 11-59 : 5
  between 60 and 70 number 6 appears 10 times (this includes 66)
  now between 71-100 six appears 3 times
  totally 1+5+10+3 = 20 times
• 14 years agoHelpfull: Yes(11) No(5)
• 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
  Ans:20.
  
• 14 years agoHelpfull: Yes(8) No(4)
• all answers are wrong...all u people forgot to count 163 and 167 as prime numbers between 150 and 200...correct answers is 22...... CHAMAILA :)
• 11 years agoHelpfull: Yes(2) No(9)
• We need to consider the numbering of building only. that is why answer should be 20 only. we do not need to consider the numbering of shops.
  @babu rao
• 10 years agoHelpfull: Yes(2) No(0)
• 8
• 14 years agoHelpfull: Yes(1) No(50)